13978569594 has 32 divisors (see below), whose sum is σ = 30514152960. Its totient is φ = 4233783600.

The previous prime is 13978569593. The next prime is 13978569607. The reversal of 13978569594 is 49596587931.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (13978569593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80067 + ... + 185385.

It is an arithmetic number, because the mean of its divisors is an integer number (953567280).

Almost surely, 2^13978569594 is an apocalyptic number.

13978569594 is an abundant number, since it is smaller than the sum of its proper divisors (16535583366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13978569594 is a wasteful number, since it uses less digits than its factorization.

13978569594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107346.

The product of its digits is 73483200, while the sum is 66.

The spelling of 13978569594 in words is "thirteen billion, nine hundred seventy-eight million, five hundred sixty-nine thousand, five hundred ninety-four".