11640697790 has 32 divisors (see below), whose sum is σ = 21289832640. Its totient is φ = 4581740800.

The previous prime is 11640697777. The next prime is 11640697801. The reversal of 11640697790 is 9779604611.

It is a super-2 number, since 2×11640697790² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354176 + ... + 385644.

It is an arithmetic number, because the mean of its divisors is an integer number (665307270).

Almost surely, 2^11640697790 is an apocalyptic number.

11640697790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11640697790 is a deficient number, since it is larger than the sum of its proper divisors (9649134850).

11640697790 is a wasteful number, since it uses less digits than its factorization.

11640697790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32068.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 11640697790 in words is "eleven billion, six hundred forty million, six hundred ninety-seven thousand, seven hundred ninety".