157856314812440 has 64 divisors (see below), whose sum is σ = 360207160704000. Its totient is φ = 62248361374080.

The previous prime is 157856314812437. The next prime is 157856314812481. The reversal of 157856314812440 is 44218413658751.

It is a super-2 number, since 2×157856314812440² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157856314812440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34538741 + ... + 38841179.

It is an arithmetic number, because the mean of its divisors is an integer number (5628236886000).

Almost surely, 2^{157856314812440} is an apocalyptic number.

157856314812440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157856314812440 is an abundant number, since it is smaller than the sum of its proper divisors (202350845891560).

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

157856314812440 is a wasteful number, since it uses less digits than its factorization.

157856314812440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315440 (or 4315436 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 157856314812440 in words is "one hundred fifty-seven trillion, eight hundred fifty-six billion, three hundred fourteen million, eight hundred twelve thousand, four hundred forty".