157720573632 has 28 divisors (see below), whose sum is σ = 417302351576. Its totient is φ = 52573524480.

The previous prime is 157720573627. The next prime is 157720573721. The reversal of 157720573632 is 236375027751.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410730469 + ... + 410730852.

Almost surely, 2^157720573632 is an apocalyptic number.

157720573632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157720573632 is an abundant number, since it is smaller than the sum of its proper divisors (259581777944).

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

157720573632 is an equidigital number, since it uses as much as digits as its factorization.

157720573632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821461336 (or 821461326 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 48.

The spelling of 157720573632 in words is "one hundred fifty-seven billion, seven hundred twenty million, five hundred seventy-three thousand, six hundred thirty-two".