13621043694 has 16 divisors (see below), whose sum is σ = 27875624832. Its totient is φ = 4434758328.

The previous prime is 13621043687. The next prime is 13621043701. The reversal of 13621043694 is 49634012631.

It is an interprime number because it is at equal distance from previous prime (13621043687) and next prime (13621043701).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26397114 + ... + 26397629.

It is an arithmetic number, because the mean of its divisors is an integer number (1742226552).

Almost surely, 2^13621043694 is an apocalyptic number.

13621043694 is an abundant number, since it is smaller than the sum of its proper divisors (14254581138).

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

13621043694 is a wasteful number, since it uses less digits than its factorization.

13621043694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52794791.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 13621043694 in words is "thirteen billion, six hundred twenty-one million, forty-three thousand, six hundred ninety-four".