156720897748 has 24 divisors (see below), whose sum is σ = 290216787840. Its totient is φ = 73897787040.

The previous prime is 156720897731. The next prime is 156720897793. The reversal of 156720897748 is 847798027651.

It is a super-2 number, since 2×156720897748² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 156720897748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11989863 + ... + 12002926.

It is an arithmetic number, because the mean of its divisors is an integer number (12092366160).

Almost surely, 2^156720897748 is an apocalyptic number.

It is an amenable number.

156720897748 is a deficient number, since it is larger than the sum of its proper divisors (133495890092).

156720897748 is a wasteful number, since it uses less digits than its factorization.

156720897748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23992887 (or 23992885 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 64.

The spelling of 156720897748 in words is "one hundred fifty-six billion, seven hundred twenty million, eight hundred ninety-seven thousand, seven hundred forty-eight".