11640115554 has 8 divisors (see below), whose sum is σ = 23280231120. Its totient is φ = 3880038516.

The previous prime is 11640115549. The next prime is 11640115561. The reversal of 11640115554 is 45551104611.

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

11640115554 is an admirable number.

It is a super-2 number, since 2×11640115554² (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 3 ways as a sum of consecutive naturals, for example, 970009624 + ... + 970009635.

It is an arithmetic number, because the mean of its divisors is an integer number (2910028890).

Almost surely, 2^11640115554 is an apocalyptic number.

11640115554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11640115554 is a wasteful number, since it uses less digits than its factorization.

11640115554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940019264.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 11640115554 in words is "eleven billion, six hundred forty million, one hundred fifteen thousand, five hundred fifty-four".