156989337122 has 18 divisors (see below), whose sum is σ = 243909395379. Its totient is φ = 75780111120.

The previous prime is 156989337103. The next prime is 156989337139. The reversal of 156989337122 is 221733989651.

156989337122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 235898881 + 156753438241 = 15359^2 + 395921^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=280169.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16244972 + ... + 16254632.

Almost surely, 2^156989337122 is an apocalyptic number.

156989337122 is a deficient number, since it is larger than the sum of its proper divisors (86920058257).

156989337122 is an frugal number, since it uses more digits than its factorization.

156989337122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19382 (or 9692 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The spelling of 156989337122 in words is "one hundred fifty-six billion, nine hundred eighty-nine million, three hundred thirty-seven thousand, one hundred twenty-two".