21675464767040 has 112 divisors (see below), whose sum is σ = 59075882896512. Its totient is φ = 7420544925696.

The previous prime is 21675464766953. The next prime is 21675464767057. The reversal of 21675464767040 is 4076746457612.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5681594 + ... + 8696633.

Almost surely, 2^{21675464767040} is an apocalyptic number.

21675464767040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21675464767040 is an abundant number, since it is smaller than the sum of its proper divisors (37400418129472).

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

21675464767040 is a wasteful number, since it uses less digits than its factorization.

21675464767040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14378924 (or 14378914 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 59.

The spelling of 21675464767040 in words is "twenty-one trillion, six hundred seventy-five billion, four hundred sixty-four million, seven hundred sixty-seven thousand, forty".