21632354477045 has 16 divisors (see below), whose sum is σ = 27963620694912. Its totient is φ = 15970111709760.

The previous prime is 21632354477021. The next prime is 21632354477047. The reversal of 21632354477045 is 54077445323612.

It is not a de Polignac number, because 21632354477045 - 2²⁴ = 21632337699829 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 (21632354477047) 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, 47166467 + ... + 47622896.

It is an arithmetic number, because the mean of its divisors is an integer number (1747726293432).

Almost surely, 2^{21632354477045} is an apocalyptic number.

It is an amenable number.

21632354477045 is a deficient number, since it is larger than the sum of its proper divisors (6331266217867).

21632354477045 is a wasteful number, since it uses less digits than its factorization.

21632354477045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94792892.

The product of its (nonzero) digits is 16934400, while the sum is 53.

The spelling of 21632354477045 in words is "twenty-one trillion, six hundred thirty-two billion, three hundred fifty-four million, four hundred seventy-seven thousand, forty-five".