11165611608 has 24 divisors (see below), whose sum is σ = 30240198300. Its totient is φ = 3721870512.

The previous prime is 11165611607. The next prime is 11165611621. The reversal of 11165611608 is 80611656111.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11165611607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77538898 + ... + 77539041.

Almost surely, 2^11165611608 is an apocalyptic number.

11165611608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11165611608 is an abundant number, since it is smaller than the sum of its proper divisors (19074586692).

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

11165611608 is a wasteful number, since it uses less digits than its factorization.

11165611608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155077951 (or 155077944 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 11165611608 in words is "eleven billion, one hundred sixty-five million, six hundred eleven thousand, six hundred eight".