157627765421 has 12 divisors (see below), whose sum is σ = 184060480608. Its totient is φ = 132234829752.

The previous prime is 157627765417. The next prime is 157627765429. The reversal of 157627765421 is 124567726751.

157627765421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157627765421 - 2² = 157627765417 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157627765429) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5081471 + ... + 5112396.

It is an arithmetic number, because the mean of its divisors is an integer number (15338373384).

Almost surely, 2^157627765421 is an apocalyptic number.

It is an amenable number.

157627765421 is a deficient number, since it is larger than the sum of its proper divisors (26432715187).

157627765421 is an equidigital number, since it uses as much as digits as its factorization.

157627765421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10193968 (or 10193921 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 53.

The spelling of 157627765421 in words is "one hundred fifty-seven billion, six hundred twenty-seven million, seven hundred sixty-five thousand, four hundred twenty-one".