856424002137 has 64 divisors (see below), whose sum is σ = 1279211028480. Its totient is φ = 505175227200.

The previous prime is 856424002129. The next prime is 856424002141. The reversal of 856424002137 is 731200424658.

It is not a de Polignac number, because 856424002137 - 2³ = 856424002129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (856424012137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 965528308 + ... + 965529194.

It is an arithmetic number, because the mean of its divisors is an integer number (19987672320).

Almost surely, 2^856424002137 is an apocalyptic number.

It is an amenable number.

856424002137 is a deficient number, since it is larger than the sum of its proper divisors (422787026343).

856424002137 is a wasteful number, since it uses less digits than its factorization.

856424002137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 856424002137 in words is "eight hundred fifty-six billion, four hundred twenty-four million, two thousand, one hundred thirty-seven".