21994762814 has 16 divisors (see below), whose sum is σ = 33490108800. Its totient is φ = 10831447704.

The previous prime is 21994762781. The next prime is 21994762837. The reversal of 21994762814 is 41826749912.

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, 1204847 + ... + 1222965.

It is an arithmetic number, because the mean of its divisors is an integer number (2093131800).

Almost surely, 2^21994762814 is an apocalyptic number.

21994762814 is a deficient number, since it is larger than the sum of its proper divisors (11495345986).

21994762814 is a wasteful number, since it uses less digits than its factorization.

21994762814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27247.

The product of its digits is 1741824, while the sum is 53.

The spelling of 21994762814 in words is "twenty-one billion, nine hundred ninety-four million, seven hundred sixty-two thousand, eight hundred fourteen".