156405038746 has 24 divisors (see below), whose sum is σ = 257906884032. Its totient is φ = 71084250600.

The previous prime is 156405038737. The next prime is 156405038747. The reversal of 156405038746 is 647830504651.

156405038746 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×156405038746² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 156405038746.

It is not an unprimeable number, because it can be changed into a prime (156405038747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2123151 + ... + 2195581.

It is an arithmetic number, because the mean of its divisors is an integer number (10746120168).

Almost surely, 2^156405038746 is an apocalyptic number.

156405038746 is a deficient number, since it is larger than the sum of its proper divisors (101501845286).

156405038746 is a wasteful number, since it uses less digits than its factorization.

156405038746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81378 (or 81367 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 156405038746 in words is "one hundred fifty-six billion, four hundred five million, thirty-eight thousand, seven hundred forty-six".