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255026987895680 = 275711134147337613
BaseRepresentation
bin111001111111001000011001…
…000001011000101110000000
31020102222100020021101121011022
4321333020121001120232000
5231411330232400130210
62302221440355405012
7104501043334111520
oct7177103101305600
91212870207347138
10255026987895680
117429437a144410
1224729b322b3768
13ac3bc320a9350
1446d952cd85680
151e73c858b4155
hexe7f219058b80

255026987895680 has 2048 divisors, whose sum is σ = 860332439715840. Its totient is φ = 69739846041600.

The previous prime is 255026987895637. The next prime is 255026987895739. The reversal of 255026987895680 is 86598789620552.

It is a Harshad number since it is a multiple of its sum of digits (80).

It is a junction number, because it is equal to n+sod(n) for n = 255026987895595 and 255026987895604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 416030975054 + ... + 416030975666.

It is an arithmetic number, because the mean of its divisors is an integer number (420084199080).

Almost surely, 2255026987895680 is an apocalyptic number.

255026987895680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255026987895680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430166219857920).

255026987895680 is an abundant number, since it is smaller than the sum of its proper divisors (605305451820160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255026987895680 is a wasteful number, since it uses less digits than its factorization.

255026987895680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 5225472000, while the sum is 80.

The spelling of 255026987895680 in words is "two hundred fifty-five trillion, twenty-six billion, nine hundred eighty-seven million, eight hundred ninety-five thousand, six hundred eighty".