11642642690 has 64 divisors (see below), whose sum is σ = 24460807680. Its totient is φ = 3907622400.

The previous prime is 11642642621. The next prime is 11642642723. The reversal of 11642642690 is 9624624611.

It is a super-2 number, since 2×11642642690² (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, 619979 + ... + 638481.

It is an arithmetic number, because the mean of its divisors is an integer number (382200120).

Almost surely, 2^11642642690 is an apocalyptic number.

11642642690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11642642690 is an abundant number, since it is smaller than the sum of its proper divisors (12818164990).

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

11642642690 is a wasteful number, since it uses less digits than its factorization.

11642642690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 11642642690 in words is "eleven billion, six hundred forty-two million, six hundred forty-two thousand, six hundred ninety".