21292559279 has 8 divisors (see below), whose sum is σ = 22550941728. Its totient is φ = 20034830080.

The previous prime is 21292559273. The next prime is 21292559341. The reversal of 21292559279 is 97295529212.

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 21292559279 - 2²⁰ = 21291510703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21292559279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21292559273) 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, 95387 + ... + 227340.

It is an arithmetic number, because the mean of its divisors is an integer number (2818867716).

Almost surely, 2^21292559279 is an apocalyptic number.

21292559279 is a deficient number, since it is larger than the sum of its proper divisors (1258382449).

21292559279 is a wasteful number, since it uses less digits than its factorization.

21292559279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326625.

The product of its digits is 2041200, while the sum is 53.

The spelling of 21292559279 in words is "twenty-one billion, two hundred ninety-two million, five hundred fifty-nine thousand, two hundred seventy-nine".