156111161004 has 60 divisors (see below), whose sum is σ = 410156362000. Its totient is φ = 51775539552.

The previous prime is 156111160999. The next prime is 156111161027. The reversal of 156111161004 is 400161111651.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1146139 + ... + 1275090.

Almost surely, 2^156111161004 is an apocalyptic number.

It is an amenable number.

156111161004 is an abundant number, since it is smaller than the sum of its proper divisors (254045200996).

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

156111161004 is a wasteful number, since it uses less digits than its factorization.

156111161004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421444 (or 2421433 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

Adding to 156111161004 its reverse (400161111651), we get a palindrome (556272272655).

The spelling of 156111161004 in words is "one hundred fifty-six billion, one hundred eleven million, one hundred sixty-one thousand, four".