21630114731567 has 4 divisors (see below), whose sum is σ = 21749618128056. Its totient is φ = 21510611335080.

The previous prime is 21630114731543. The next prime is 21630114731579. The reversal of 21630114731567 is 76513741103612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21630114731567 - 2¹² = 21630114727471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21630114731507) 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 in 3 ways as a sum of consecutive naturals, for example, 59751697973 + ... + 59751698334.

It is an arithmetic number, because the mean of its divisors is an integer number (5437404532014).

Almost surely, 2^{21630114731567} is an apocalyptic number.

21630114731567 is a deficient number, since it is larger than the sum of its proper divisors (119503396489).

21630114731567 is a wasteful number, since it uses less digits than its factorization.

21630114731567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119503396488.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 21630114731567 in words is "twenty-one trillion, six hundred thirty billion, one hundred fourteen million, seven hundred thirty-one thousand, five hundred sixty-seven".