11601555006 has 16 divisors (see below), whose sum is σ = 23211137664. Its totient is φ = 3865847064.

The previous prime is 11601555001. The next prime is 11601555019. The reversal of 11601555006 is 60055510611.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601555001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315616 + ... + 350451.

It is an arithmetic number, because the mean of its divisors is an integer number (1450696104).

Almost surely, 2^11601555006 is an apocalyptic number.

11601555006 is an abundant number, since it is smaller than the sum of its proper divisors (11609582658).

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

11601555006 is a wasteful number, since it uses less digits than its factorization.

11601555006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668975.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 11601555006 in words is "eleven billion, six hundred one million, five hundred fifty-five thousand, six".