157861592064 has 220 divisors, whose sum is σ = 514263601368. Its totient is φ = 47836569600.

The previous prime is 157861592041. The next prime is 157861592071. The reversal of 157861592064 is 460295168751.

It is a happy number.

157861592064 is a `hidden beast` number, since 1 + 578 + 6 + 1 + 5 + 9 + 2 + 0 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 157861592064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 825874 + ... + 998894.

Almost surely, 2^157861592064 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 157861592064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257131800684).

157861592064 is an abundant number, since it is smaller than the sum of its proper divisors (356402009304).

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

157861592064 is a wasteful number, since it uses less digits than its factorization.

157861592064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173064 (or 173037 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 157861592064 in words is "one hundred fifty-seven billion, eight hundred sixty-one million, five hundred ninety-two thousand, sixty-four".