11646720722 has 64 divisors (see below), whose sum is σ = 22035552000. Its totient is φ = 4587528960.

The previous prime is 11646720713. The next prime is 11646720737. The reversal of 11646720722 is 22702764611.

It is a super-2 number, since 2×11646720722² (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 31 ways as a sum of consecutive naturals, for example, 2146529 + ... + 2151947.

It is an arithmetic number, because the mean of its divisors is an integer number (344305500).

Almost surely, 2^11646720722 is an apocalyptic number.

11646720722 is a deficient number, since it is larger than the sum of its proper divisors (10388831278).

11646720722 is a wasteful number, since it uses less digits than its factorization.

11646720722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5696 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 11646720722 in words is "eleven billion, six hundred forty-six million, seven hundred twenty thousand, seven hundred twenty-two".