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257116054715 = 5138944445299
BaseRepresentation
bin1110111101110101001…
…1111010010010111011
3220120122212012220001022
43233131103322102323
513203033202222330
6314041213213055
724401401255652
oct3573523722273
9816585186038
10257116054715
119a051345503
12419b779118b
131b32743a060
14c63193c199
156a4c909ae5
hex3bdd4fa4bb

257116054715 has 16 divisors (see below), whose sum is σ = 336006468000. Its totient is φ = 187736938752.

The previous prime is 257116054691. The next prime is 257116054717. The reversal of 257116054715 is 517450611752.

It is a cyclic number.

It is not a de Polignac number, because 257116054715 - 220 = 257115006139 is a prime.

It is a super-2 number, since 2×2571160547152 (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257116054717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22216865 + ... + 22228434.

It is an arithmetic number, because the mean of its divisors is an integer number (21000404250).

Almost surely, 2257116054715 is an apocalyptic number.

257116054715 is a deficient number, since it is larger than the sum of its proper divisors (78890413285).

257116054715 is a wasteful number, since it uses less digits than its factorization.

257116054715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44445406.

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 257116054715 in words is "two hundred fifty-seven billion, one hundred sixteen million, fifty-four thousand, seven hundred fifteen".

Divisors: 1 5 13 65 89 445 1157 5785 44445299 222226495 577788887 2888944435 3955631611 19778158055 51423210943 257116054715