156090576889 has 9 divisors (see below), whose sum is σ = 169026718959. Its totient is φ = 144078868440.

The previous prime is 156090576877. The next prime is 156090576911. The reversal of 156090576889 is 988675090651.

The square root of 156090576889 is 395083.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23090322025 + 133000254864 = 151955^2 + 364692^2 .

It is not a de Polignac number, because 156090576889 - 2⁵ = 156090576857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156090576889.

It is not an unprimeable number, because it can be changed into a prime (156090576809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5120884 + ... + 5151274.

It is an arithmetic number, because the mean of its divisors is an integer number (18780746551).

Almost surely, 2^156090576889 is an apocalyptic number.

156090576889 is the 395083-rd square number.

156090576889 is the 197542-nd centered octagonal number.

It is an amenable number.

156090576889 is a deficient number, since it is larger than the sum of its proper divisors (12936142070).

156090576889 is an frugal number, since it uses more digits than its factorization.

156090576889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60808 (or 30404 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 64.

Multiplying 156090576889 by its sum of digits (64), we get a square (9989796920896 = 3160664²).

The spelling of 156090576889 in words is "one hundred fifty-six billion, ninety million, five hundred seventy-six thousand, eight hundred eighty-nine".