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51023389802560 = 265725236221879
BaseRepresentation
bin10111001100111110011110…
…00001100100000001000000
320200122210021202121202210121
423212133033001210001000
523141431400242140220
6300303453252310024
713514214110260300
oct1346371701440100
9220583252552717
1051023389802560
111529199740391a
125880812012314
13226163c75b876
14c8578c20b600
155d737ea32eaa
hex2e67cf064040

51023389802560 has 168 divisors, whose sum is σ = 141606355222080. Its totient is φ = 17460282018816.

The previous prime is 51023389802549. The next prime is 51023389802677. The reversal of 51023389802560 is 6520898332015.

It is a junction number, because it is equal to n+sod(n) for n = 51023389802498 and 51023389802507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5089701 + ... + 11311579.

It is an arithmetic number, because the mean of its divisors is an integer number (842894971560).

Almost surely, 251023389802560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51023389802560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70803177611040).

51023389802560 is an abundant number, since it is smaller than the sum of its proper divisors (90582965419520).

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

51023389802560 is a wasteful number, since it uses less digits than its factorization.

51023389802560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222433 (or 6222416 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 51023389802560 in words is "fifty-one trillion, twenty-three billion, three hundred eighty-nine million, eight hundred two thousand, five hundred sixty".