11667165660 has 72 divisors (see below), whose sum is σ = 35460210240. Its totient is φ = 3105107328.

The previous prime is 11667165599. The next prime is 11667165683. The reversal of 11667165660 is 6656176611.

11667165660 is a `hidden beast` number, since 1 + 16 + 6 + 71 + 6 + 566 + 0 = 666.

It is a super-2 number, since 2×11667165660² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27949 + ... + 155291.

It is an arithmetic number, because the mean of its divisors is an integer number (492502920).

Almost surely, 2^11667165660 is an apocalyptic number.

11667165660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11667165660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17730105120).

11667165660 is an abundant number, since it is smaller than the sum of its proper divisors (23793044580).

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

11667165660 is a wasteful number, since it uses less digits than its factorization.

11667165660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127867 (or 127862 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 11667165660 in words is "eleven billion, six hundred sixty-seven million, one hundred sixty-five thousand, six hundred sixty".