21127630104 has 96 divisors (see below), whose sum is σ = 65422549920. Its totient is φ = 6033927168.

The previous prime is 21127630093. The next prime is 21127630129. The reversal of 21127630104 is 40103672112.

21127630104 is a `hidden beast` number, since 2 + 1 + 1 + 27 + 630 + 1 + 0 + 4 = 666.

It is a super-2 number, since 2×21127630104² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1420434 + ... + 1435230.

It is an arithmetic number, because the mean of its divisors is an integer number (681484895).

Almost surely, 2^21127630104 is an apocalyptic number.

21127630104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21127630104 is an abundant number, since it is smaller than the sum of its proper divisors (44294919816).

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

21127630104 is a wasteful number, since it uses less digits than its factorization.

21127630104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17649 (or 17642 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 21127630104 in words is "twenty-one billion, one hundred twenty-seven million, six hundred thirty thousand, one hundred four".