156945996544 has 36 divisors (see below), whose sum is σ = 314623587096. Its totient is φ = 78136174592.

The previous prime is 156945996521. The next prime is 156945996547. The reversal of 156945996544 is 445699549651.

It is a self number, because there is not a number n which added to its sum of digits gives 156945996544.

It is not an unprimeable number, because it can be changed into a prime (156945996547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255954 + ... + 1375249.

It is an arithmetic number, because the mean of its divisors is an integer number (8739544086).

Almost surely, 2^156945996544 is an apocalyptic number.

It is an amenable number.

156945996544 is an abundant number, since it is smaller than the sum of its proper divisors (157677590552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156945996544 is an equidigital number, since it uses as much as digits as its factorization.

156945996544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631452 (or 2631438 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 67.

The spelling of 156945996544 in words is "one hundred fifty-six billion, nine hundred forty-five million, nine hundred ninety-six thousand, five hundred forty-four".