21632554071 has 12 divisors (see below), whose sum is σ = 31260177000. Its totient is φ = 14415631440.

The previous prime is 21632554033. The next prime is 21632554093. The reversal of 21632554071 is 17045523612.

21632554071 is a `hidden beast` number, since 2 + 1 + 6 + 32 + 554 + 0 + 71 = 666.

It is not a de Polignac number, because 21632554071 - 2⁶ = 21632554007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21632554001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 483321 + ... + 526178.

It is an arithmetic number, because the mean of its divisors is an integer number (2605014750).

Almost surely, 2^21632554071 is an apocalyptic number.

21632554071 is a deficient number, since it is larger than the sum of its proper divisors (9627622929).

21632554071 is a wasteful number, since it uses less digits than its factorization.

21632554071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011886 (or 1011883 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 21632554071 in words is "twenty-one billion, six hundred thirty-two million, five hundred fifty-four thousand, seventy-one".