157864335420 has 96 divisors (see below), whose sum is σ = 495236399616. Its totient is φ = 37235808000.

The previous prime is 157864335413. The next prime is 157864335479. The reversal of 157864335420 is 24533468751.

It is a super-2 number, since 2×157864335420² (a number of 23 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 157864335420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3207856 + ... + 3256695.

It is an arithmetic number, because the mean of its divisors is an integer number (5158712496).

Almost surely, 2^157864335420 is an apocalyptic number.

157864335420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157864335420 is an abundant number, since it is smaller than the sum of its proper divisors (337372064196).

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

157864335420 is a wasteful number, since it uses less digits than its factorization.

157864335420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464611 (or 6464609 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 157864335420 in words is "one hundred fifty-seven billion, eight hundred sixty-four million, three hundred thirty-five thousand, four hundred twenty".