13168020894 has 32 divisors (see below), whose sum is σ = 31136209920. Its totient is φ = 3632557152.

The previous prime is 13168020839. The next prime is 13168020913. The reversal of 13168020894 is 49802086131.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 5404374 + ... + 5406809.

It is an arithmetic number, because the mean of its divisors is an integer number (973006560).

Almost surely, 2^13168020894 is an apocalyptic number.

13168020894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13168020894 is an abundant number, since it is smaller than the sum of its proper divisors (17968189026).

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

13168020894 is a wasteful number, since it uses less digits than its factorization.

13168020894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10811224.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 13168020894 in words is "thirteen billion, one hundred sixty-eight million, twenty thousand, eight hundred ninety-four".