13980006478 has 8 divisors (see below), whose sum is σ = 21091224168. Its totient is φ = 6949598424.

The previous prime is 13980006463. The next prime is 13980006497. The reversal of 13980006478 is 87460008931.

It is a happy number.

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

It is a super-2 number, since 2×13980006478² (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 3 ways as a sum of consecutive naturals, for example, 20201976 + ... + 20202667.

It is an arithmetic number, because the mean of its divisors is an integer number (2636403021).

Almost surely, 2^13980006478 is an apocalyptic number.

13980006478 is a deficient number, since it is larger than the sum of its proper divisors (7111217690).

13980006478 is a wasteful number, since it uses less digits than its factorization.

13980006478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40404818.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 13980006478 in words is "thirteen billion, nine hundred eighty million, six thousand, four hundred seventy-eight".