13972981648 has 20 divisors (see below), whose sum is σ = 27335496448. Its totient is φ = 6918660000.

The previous prime is 13972981613. The next prime is 13972981669. The reversal of 13972981648 is 84618927931.

It is a super-2 number, since 2×13972981648² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13972981592 and 13972981601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4237728 + ... + 4241023.

Almost surely, 2^13972981648 is an apocalyptic number.

It is an amenable number.

13972981648 is a deficient number, since it is larger than the sum of its proper divisors (13362514800).

13972981648 is a wasteful number, since it uses less digits than its factorization.

13972981648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478862 (or 8478856 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The spelling of 13972981648 in words is "thirteen billion, nine hundred seventy-two million, nine hundred eighty-one thousand, six hundred forty-eight".