156820323674 has 32 divisors (see below), whose sum is σ = 299630171520. Its totient is φ = 59926030848.

The previous prime is 156820323637. The next prime is 156820323677. The reversal of 156820323674 is 476323028651.

It is a super-2 number, since 2×156820323674² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156820323677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17335187 + ... + 17344230.

It is an arithmetic number, because the mean of its divisors is an integer number (9363442860).

Almost surely, 2^156820323674 is an apocalyptic number.

156820323674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

156820323674 is a deficient number, since it is larger than the sum of its proper divisors (142809847846).

156820323674 is a wasteful number, since it uses less digits than its factorization.

156820323674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34679462.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 156820323674 in words is "one hundred fifty-six billion, eight hundred twenty million, three hundred twenty-three thousand, six hundred seventy-four".