11667541065 has 32 divisors (see below), whose sum is σ = 20090249856. Its totient is φ = 5760629760.

The previous prime is 11667541051. The next prime is 11667541073. The reversal of 11667541065 is 56014576611.

It is a happy number.

It is not a de Polignac number, because 11667541065 - 2⁹ = 11667540553 is a prime.

It is a super-2 number, since 2×11667541065² (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 31 ways as a sum of consecutive naturals, for example, 359487 + ... + 390596.

It is an arithmetic number, because the mean of its divisors is an integer number (627820308).

Almost surely, 2^11667541065 is an apocalyptic number.

11667541065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11667541065 is a deficient number, since it is larger than the sum of its proper divisors (8422708791).

11667541065 is a wasteful number, since it uses less digits than its factorization.

11667541065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750169.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 11667541065 in words is "eleven billion, six hundred sixty-seven million, five hundred forty-one thousand, sixty-five".