156399374090 has 8 divisors (see below), whose sum is σ = 281518873380. Its totient is φ = 62559749632.

The previous prime is 156399374081. The next prime is 156399374093. The reversal of 156399374090 is 90473993651.

It can be written as a sum of positive squares in 2 ways, for example, as 145029203929 + 11370170161 = 380827^2 + 106631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156399374093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7819968695 + ... + 7819968714.

Almost surely, 2^156399374090 is an apocalyptic number.

156399374090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156399374090 is a deficient number, since it is larger than the sum of its proper divisors (125119499290).

156399374090 is a wasteful number, since it uses less digits than its factorization.

156399374090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15639937416.

The product of its (nonzero) digits is 5511240, while the sum is 56.

The spelling of 156399374090 in words is "one hundred fifty-six billion, three hundred ninety-nine million, three hundred seventy-four thousand, ninety".