5123157512256 has 420 divisors, whose sum is σ = 17685140962896. Its totient is φ = 1462181414400.

The previous prime is 5123157512243. The next prime is 5123157512257. The reversal of 5123157512256 is 6522157513215.

5123157512256 is a `hidden beast` number, since 5 + 1 + 2 + 3 + 1 + 575 + 1 + 22 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (5123157512257) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 246639151 + ... + 246659921.

Almost surely, 2^{5123157512256} is an apocalyptic number.

5123157512256 is a gapful number since it is divisible by the number (56) 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 5123157512256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8842570481448).

5123157512256 is an abundant number, since it is smaller than the sum of its proper divisors (12561983450640).

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

5123157512256 is a wasteful number, since it uses less digits than its factorization.

5123157512256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21780 (or 21754 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The spelling of 5123157512256 in words is "five trillion, one hundred twenty-three billion, one hundred fifty-seven million, five hundred twelve thousand, two hundred fifty-six".