21292764199079 has 8 divisors (see below), whose sum is σ = 21355024416768. Its totient is φ = 21230579957400.

The previous prime is 21292764199073. The next prime is 21292764199139. The reversal of 21292764199079 is 97099146729212.

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 21292764199079 - 2²⁴ = 21292747421863 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 (21292764199073) 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, 18432647 + ... + 19553720.

It is an arithmetic number, because the mean of its divisors is an integer number (2669378052096).

Almost surely, 2^{21292764199079} is an apocalyptic number.

21292764199079 is a deficient number, since it is larger than the sum of its proper divisors (62260217689).

21292764199079 is a wasteful number, since it uses less digits than its factorization.

21292764199079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37988005.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 21292764199079 in words is "twenty-one trillion, two hundred ninety-two billion, seven hundred sixty-four million, one hundred ninety-nine thousand, seventy-nine".