13720373956 has 9 divisors (see below), whose sum is σ = 24011064399. Its totient is φ = 6860069844.

The previous prime is 13720373941. The next prime is 13720373963. The reversal of 13720373956 is 65937302731.

The square root of 13720373956 is 117134.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×13720373956² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 204985 + ... + 263551.

Almost surely, 2^13720373956 is an apocalyptic number.

13720373956 is the 117134-th square number.

It is an amenable number.

13720373956 is a deficient number, since it is larger than the sum of its proper divisors (10290690443).

13720373956 is an frugal number, since it uses more digits than its factorization.

13720373956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117138 (or 58569 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 46.

The spelling of 13720373956 in words is "thirteen billion, seven hundred twenty million, three hundred seventy-three thousand, nine hundred fifty-six".