21514774967 has 8 divisors (see below), whose sum is σ = 24610615296. Its totient is φ = 18424509912.

The previous prime is 21514774927. The next prime is 21514774973. The reversal of 21514774967 is 76947741512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21514774967 - 2²⁸ = 21246339511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514774927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385543 + ... + 1400984.

It is an arithmetic number, because the mean of its divisors is an integer number (3076326912).

Almost surely, 2^21514774967 is an apocalyptic number.

21514774967 is a deficient number, since it is larger than the sum of its proper divisors (3095840329).

21514774967 is a wasteful number, since it uses less digits than its factorization.

21514774967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787637.

The product of its digits is 2963520, while the sum is 53.

The spelling of 21514774967 in words is "twenty-one billion, five hundred fourteen million, seven hundred seventy-four thousand, nine hundred sixty-seven".