156842046681 has 32 divisors (see below), whose sum is σ = 216703807488. Its totient is φ = 100837726080.

The previous prime is 156842046661. The next prime is 156842046707. The reversal of 156842046681 is 186640248651.

It is not a de Polignac number, because 156842046681 - 2³³ = 148252112089 is a prime.

It is a super-2 number, since 2×156842046681² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156842046661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23953050 + ... + 23959596.

It is an arithmetic number, because the mean of its divisors is an integer number (6771993984).

Almost surely, 2^156842046681 is an apocalyptic number.

It is an amenable number.

156842046681 is a deficient number, since it is larger than the sum of its proper divisors (59861760807).

156842046681 is a wasteful number, since it uses less digits than its factorization.

156842046681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 156842046681 in words is "one hundred fifty-six billion, eight hundred forty-two million, forty-six thousand, six hundred eighty-one".