21046373655620 has 24 divisors (see below), whose sum is σ = 44202966192000. Its totient is φ = 8417486316512.

The previous prime is 21046373655617. The next prime is 21046373655649. The reversal of 21046373655620 is 2655637364012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66284270 + ... + 66601029.

It is an arithmetic number, because the mean of its divisors is an integer number (1841790258000).

Almost surely, 2^{21046373655620} is an apocalyptic number.

21046373655620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21046373655620 is an abundant number, since it is smaller than the sum of its proper divisors (23156592536380).

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

21046373655620 is a wasteful number, since it uses less digits than its factorization.

21046373655620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132893227 (or 132893225 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 21046373655620 in words is "twenty-one trillion, forty-six billion, three hundred seventy-three million, six hundred fifty-five thousand, six hundred twenty".