11665557708 has 24 divisors (see below), whose sum is σ = 31108154112. Its totient is φ = 3333016464.

The previous prime is 11665557697. The next prime is 11665557767. The reversal of 11665557708 is 80775556611.

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, 69437760 + ... + 69437927.

It is an arithmetic number, because the mean of its divisors is an integer number (1296173088).

Almost surely, 2^11665557708 is an apocalyptic number.

It is an amenable number.

11665557708 is an abundant number, since it is smaller than the sum of its proper divisors (19442596404).

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

11665557708 is a wasteful number, since it uses less digits than its factorization.

11665557708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138875701 (or 138875699 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 51.

The spelling of 11665557708 in words is "eleven billion, six hundred sixty-five million, five hundred fifty-seven thousand, seven hundred eight".