21096746016 has 24 divisors (see below), whose sum is σ = 55378958544. Its totient is φ = 7032248640.

The previous prime is 21096745997. The next prime is 21096746051. The reversal of 21096746016 is 61064769012.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×21096746016² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109878790 + ... + 109878981.

It is an arithmetic number, because the mean of its divisors is an integer number (2307456606).

Almost surely, 2^21096746016 is an apocalyptic number.

It is an amenable number.

21096746016 is an abundant number, since it is smaller than the sum of its proper divisors (34282212528).

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

21096746016 is a wasteful number, since it uses less digits than its factorization.

21096746016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219757784 (or 219757776 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 21096746016 in words is "twenty-one billion, ninety-six million, seven hundred forty-six thousand, sixteen".