21404410632 has 96 divisors (see below), whose sum is σ = 66568788000. Its totient is φ = 6144802560.

The previous prime is 21404410631. The next prime is 21404410633. The reversal of 21404410632 is 23601440412.

It is a happy number.

21404410632 is a `hidden beast` number, since 2 + 14 + 0 + 4 + 4 + 10 + 632 = 666.

It is an interprime number because it is at equal distance from previous prime (21404410631) and next prime (21404410633).

It is a junction number, because it is equal to n+sod(n) for n = 21404410596 and 21404410605.

It is not an unprimeable number, because it can be changed into a prime (21404410631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696157 + ... + 726252.

It is an arithmetic number, because the mean of its divisors is an integer number (693424875).

Almost surely, 2^21404410632 is an apocalyptic number.

21404410632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21404410632 is an abundant number, since it is smaller than the sum of its proper divisors (45164377368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21404410632 is a wasteful number, since it uses less digits than its factorization.

21404410632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422451 (or 1422444 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

It can be divided in two parts, 214044 and 10632, that added together give a square (224676 = 474²).

The spelling of 21404410632 in words is "twenty-one billion, four hundred four million, four hundred ten thousand, six hundred thirty-two".