11649710975 has 12 divisors (see below), whose sum is σ = 16509304944. Its totient is φ = 7988373120.

The previous prime is 11649710971. The next prime is 11649710983. The reversal of 11649710975 is 57901794611.

It is not a de Polignac number, because 11649710975 - 2² = 11649710971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11649710971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33284714 + ... + 33285063.

It is an arithmetic number, because the mean of its divisors is an integer number (1375775412).

Almost surely, 2^11649710975 is an apocalyptic number.

11649710975 is a deficient number, since it is larger than the sum of its proper divisors (4859593969).

11649710975 is an equidigital number, since it uses as much as digits as its factorization.

11649710975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66569794 (or 66569789 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 50.

The spelling of 11649710975 in words is "eleven billion, six hundred forty-nine million, seven hundred ten thousand, nine hundred seventy-five".