13953208779 has 48 divisors (see below), whose sum is σ = 22057850880. Its totient is φ = 8461290240.

The previous prime is 13953208777. The next prime is 13953208781. The reversal of 13953208779 is 97780235931.

13953208779 is a `hidden beast` number, since 1 + 39 + 532 + 0 + 8 + 7 + 79 = 666.

It is an interprime number because it is at equal distance from previous prime (13953208777) and next prime (13953208781).

It is not a de Polignac number, because 13953208779 - 2¹ = 13953208777 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13953208777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4831674 + ... + 4834560.

It is an arithmetic number, because the mean of its divisors is an integer number (459538560).

Almost surely, 2^13953208779 is an apocalyptic number.

13953208779 is a deficient number, since it is larger than the sum of its proper divisors (8104642101).

13953208779 is a wasteful number, since it uses less digits than its factorization.

13953208779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 13953208779 in words is "thirteen billion, nine hundred fifty-three million, two hundred eight thousand, seven hundred seventy-nine".