13978753916 has 24 divisors (see below), whose sum is σ = 24632584704. Its totient is φ = 6941031680.

The previous prime is 13978753909. The next prime is 13978753963. The reversal of 13978753916 is 61935787931.

It is a super-2 number, since 2×13978753916² (a number of 21 digits) contains 22 as substring.

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, 337376 + ... + 376536.

It is an arithmetic number, because the mean of its divisors is an integer number (1026357696).

Almost surely, 2^13978753916 is an apocalyptic number.

It is an amenable number.

13978753916 is a deficient number, since it is larger than the sum of its proper divisors (10653830788).

13978753916 is a wasteful number, since it uses less digits than its factorization.

13978753916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39781 (or 39779 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 59.

The spelling of 13978753916 in words is "thirteen billion, nine hundred seventy-eight million, seven hundred fifty-three thousand, nine hundred sixteen".