10664420640 has 48 divisors (see below), whose sum is σ = 33592926528. Its totient is φ = 2843845376.

The previous prime is 10664420629. The next prime is 10664420653. The reversal of 10664420640 is 4602446601.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×10664420640² (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 7 ways as a sum of consecutive naturals, for example, 11108292 + ... + 11109251.

It is an arithmetic number, because the mean of its divisors is an integer number (699852636).

Almost surely, 2^10664420640 is an apocalyptic number.

10664420640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10664420640 is an abundant number, since it is smaller than the sum of its proper divisors (22928505888).

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

10664420640 is a wasteful number, since it uses less digits than its factorization.

10664420640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22217561 (or 22217553 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 10664420640 in words is "ten billion, six hundred sixty-four million, four hundred twenty thousand, six hundred forty".