13972886986 has 8 divisors (see below), whose sum is σ = 20969408484. Its totient is φ = 6983084160.

The previous prime is 13972886951. The next prime is 13972886989. The reversal of 13972886986 is 68968827931.

It can be written as a sum of positive squares in 2 ways, for example, as 11434238761 + 2538648225 = 106931^2 + 50385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13972886989) 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, 1674465 + ... + 1682788.

Almost surely, 2^13972886986 is an apocalyptic number.

13972886986 is a deficient number, since it is larger than the sum of its proper divisors (6996521498).

13972886986 is a wasteful number, since it uses less digits than its factorization.

13972886986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359336.

The product of its digits is 62705664, while the sum is 67.

The spelling of 13972886986 in words is "thirteen billion, nine hundred seventy-two million, eight hundred eighty-six thousand, nine hundred eighty-six".