156390362906 has 4 divisors (see below), whose sum is σ = 234585544362. Its totient is φ = 78195181452.

The previous prime is 156390362879. The next prime is 156390362923. The reversal of 156390362906 is 609263093651.

156390362906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609263093651 = 419 ⋅1454088529.

It can be written as a sum of positive squares in only one way, i.e., 136024504225 + 20365858681 = 368815^2 + 142709^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39097590725 + ... + 39097590728.

Almost surely, 2^156390362906 is an apocalyptic number.

156390362906 is a deficient number, since it is larger than the sum of its proper divisors (78195181456).

156390362906 is an equidigital number, since it uses as much as digits as its factorization.

156390362906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78195181455.

The product of its (nonzero) digits is 1574640, while the sum is 50.

The spelling of 156390362906 in words is "one hundred fifty-six billion, three hundred ninety million, three hundred sixty-two thousand, nine hundred six".