21477632626319 has 2 divisors, whose sum is σ = 21477632626320. Its totient is φ = 21477632626318.

The previous prime is 21477632626309. The next prime is 21477632626409. The reversal of 21477632626319 is 91362623677412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21477632626319 is a prime.

It is a super-2 number, since 2×21477632626319² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21477632626309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10738816313159 + 10738816313160.

It is an arithmetic number, because the mean of its divisors is an integer number (10738816313160).

Almost surely, 2^{21477632626319} is an apocalyptic number.

21477632626319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21477632626319 is an equidigital number, since it uses as much as digits as its factorization.

21477632626319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 59.

The spelling of 21477632626319 in words is "twenty-one trillion, four hundred seventy-seven billion, six hundred thirty-two million, six hundred twenty-six thousand, three hundred nineteen".