21377079359 has 16 divisors (see below), whose sum is σ = 22590489600. Its totient is φ = 20187669216.

The previous prime is 21377079323. The next prime is 21377079407. The reversal of 21377079359 is 95397077312.

It is a cyclic number.

It is not a de Polignac number, because 21377079359 - 2⁸ = 21377079103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21377079359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21377079959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3870602 + ... + 3876120.

It is an arithmetic number, because the mean of its divisors is an integer number (1411905600).

Almost surely, 2^21377079359 is an apocalyptic number.

21377079359 is a deficient number, since it is larger than the sum of its proper divisors (1213410241).

21377079359 is a wasteful number, since it uses less digits than its factorization.

21377079359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7654.

The product of its (nonzero) digits is 2500470, while the sum is 53.

The spelling of 21377079359 in words is "twenty-one billion, three hundred seventy-seven million, seventy-nine thousand, three hundred fifty-nine".