21046356310 has 64 divisors (see below), whose sum is σ = 45202904064. Its totient is φ = 6898320000.

The previous prime is 21046356301. The next prime is 21046356311. The reversal of 21046356310 is 1365364012.

It is a super-2 number, since 2×21046356310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21046356311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5232100 + ... + 5236120.

It is an arithmetic number, because the mean of its divisors is an integer number (706295376).

Almost surely, 2^21046356310 is an apocalyptic number.

21046356310 is an abundant number, since it is smaller than the sum of its proper divisors (24156547754).

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

21046356310 is a wasteful number, since it uses less digits than its factorization.

21046356310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 21046356310 in words is "twenty-one billion, forty-six million, three hundred fifty-six thousand, three hundred ten".