156813129974 has 16 divisors (see below), whose sum is σ = 241642539600. Its totient is φ = 76266766944.

The previous prime is 156813129973. The next prime is 156813129983. The reversal of 156813129974 is 479921318651.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156813129973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11204 + ... + 560135.

It is an arithmetic number, because the mean of its divisors is an integer number (15102658725).

Almost surely, 2^156813129974 is an apocalyptic number.

156813129974 is a deficient number, since it is larger than the sum of its proper divisors (84829409626).

156813129974 is a wasteful number, since it uses less digits than its factorization.

156813129974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575087.

The product of its digits is 3265920, while the sum is 56.

The spelling of 156813129974 in words is "one hundred fifty-six billion, eight hundred thirteen million, one hundred twenty-nine thousand, nine hundred seventy-four".