21764913339 has 8 divisors (see below), whose sum is σ = 31252183312. Its totient is φ = 13393792800.

The previous prime is 21764913329. The next prime is 21764913341. The reversal of 21764913339 is 93331946712.

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

It is not a de Polignac number, because 21764913339 - 2²⁵ = 21731358907 is a prime.

It is a super-2 number, since 2×21764913339² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21764913319) 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, 279037312 + ... + 279037389.

It is an arithmetic number, because the mean of its divisors is an integer number (3906522914).

Almost surely, 2^21764913339 is an apocalyptic number.

21764913339 is a deficient number, since it is larger than the sum of its proper divisors (9487269973).

21764913339 is a wasteful number, since it uses less digits than its factorization.

21764913339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558074717.

The product of its digits is 734832, while the sum is 48.

The spelling of 21764913339 in words is "twenty-one billion, seven hundred sixty-four million, nine hundred thirteen thousand, three hundred thirty-nine".