21623462561711 has 16 divisors (see below), whose sum is σ = 23685188551200. Its totient is φ = 19649502824448.

The previous prime is 21623462561699. The next prime is 21623462561761. The reversal of 21623462561711 is 11716526432612.

It is a de Polignac number, because none of the positive numbers 2^k-21623462561711 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 (21623462561761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59982560 + ... + 60341978.

It is an arithmetic number, because the mean of its divisors is an integer number (1480324284450).

Almost surely, 2^{21623462561711} is an apocalyptic number.

21623462561711 is a deficient number, since it is larger than the sum of its proper divisors (2061725989489).

21623462561711 is a wasteful number, since it uses less digits than its factorization.

21623462561711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481498.

The product of its digits is 725760, while the sum is 47.

The spelling of 21623462561711 in words is "twenty-one trillion, six hundred twenty-three billion, four hundred sixty-two million, five hundred sixty-one thousand, seven hundred eleven".