21776696694 has 32 divisors (see below), whose sum is σ = 48405782880. Its totient is φ = 7256930400.

The previous prime is 21776696681. The next prime is 21776696707. The reversal of 21776696694 is 49669667712.

It is an interprime number because it is at equal distance from previous prime (21776696681) and next prime (21776696707).

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, 153564 + ... + 259104.

It is an arithmetic number, because the mean of its divisors is an integer number (1512680715).

Almost surely, 2^21776696694 is an apocalyptic number.

21776696694 is an abundant number, since it is smaller than the sum of its proper divisors (26629086186).

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

21776696694 is a wasteful number, since it uses less digits than its factorization.

21776696694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109373 (or 109367 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

The spelling of 21776696694 in words is "twenty-one billion, seven hundred seventy-six million, six hundred ninety-six thousand, six hundred ninety-four".