156401794624 has 28 divisors (see below), whose sum is σ = 310413867868. Its totient is φ = 78187276800.

The previous prime is 156401794609. The next prime is 156401794631. The reversal of 156401794624 is 426497104651.

It can be written as a sum of positive squares in 2 ways, for example, as 104432385600 + 51969409024 = 323160^2 + 227968^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162634 + ... + 582454.

Almost surely, 2^156401794624 is an apocalyptic number.

It is an amenable number.

156401794624 is a deficient number, since it is larger than the sum of its proper divisors (154012073244).

156401794624 is an equidigital number, since it uses as much as digits as its factorization.

156401794624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425654 (or 425644 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 156401794624 in words is "one hundred fifty-six billion, four hundred one million, seven hundred ninety-four thousand, six hundred twenty-four".