11640619765 has 8 divisors (see below), whose sum is σ = 14346277560. Its totient is φ = 9060806592.

The previous prime is 11640619759. The next prime is 11640619787. The reversal of 11640619765 is 56791604611.

It can be written as a sum of positive squares in 4 ways, for example, as 2150547876 + 9490071889 = 46374^2 + 97417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11640619765 - 2²³ = 11632231157 is a prime.

It is a congruent number.

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, 31460950 + ... + 31461319.

It is an arithmetic number, because the mean of its divisors is an integer number (1793284695).

Almost surely, 2^11640619765 is an apocalyptic number.

It is an amenable number.

11640619765 is a deficient number, since it is larger than the sum of its proper divisors (2705657795).

11640619765 is an equidigital number, since it uses as much as digits as its factorization.

11640619765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62922311.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 11640619765 in words is "eleven billion, six hundred forty million, six hundred nineteen thousand, seven hundred sixty-five".