21377873039 has 2 divisors, whose sum is σ = 21377873040. Its totient is φ = 21377873038.

The previous prime is 21377873003. The next prime is 21377873051. The reversal of 21377873039 is 93037877312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21377873039 - 2³² = 17082905743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21377873339) 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 as a sum of consecutive naturals, namely, 10688936519 + 10688936520.

It is an arithmetic number, because the mean of its divisors is an integer number (10688936520).

Almost surely, 2^21377873039 is an apocalyptic number.

21377873039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21377873039 is an equidigital number, since it uses as much as digits as its factorization.

21377873039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 21377873039 in words is "twenty-one billion, three hundred seventy-seven million, eight hundred seventy-three thousand, thirty-nine".