13953799478 has 32 divisors (see below), whose sum is σ = 22462634880. Its totient is φ = 6477632640.

The previous prime is 13953799439. The next prime is 13953799513. The reversal of 13953799478 is 87499735931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082113 + ... + 2088803.

It is an arithmetic number, because the mean of its divisors is an integer number (701957340).

Almost surely, 2^13953799478 is an apocalyptic number.

13953799478 is a deficient number, since it is larger than the sum of its proper divisors (8508835402).

13953799478 is a wasteful number, since it uses less digits than its factorization.

13953799478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532.

The product of its digits is 51438240, while the sum is 65.

The spelling of 13953799478 in words is "thirteen billion, nine hundred fifty-three million, seven hundred ninety-nine thousand, four hundred seventy-eight".