23535606111556 has 144 divisors (see below), whose sum is σ = 52153433152128. Its totient is φ = 9028479283200.

The previous prime is 23535606111551. The next prime is 23535606111601. The reversal of 23535606111556 is 65511160653532.

It is a super-2 number, since 2×23535606111556² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23535606111551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 973297786 + ... + 973321966.

It is an arithmetic number, because the mean of its divisors is an integer number (362176619112).

Almost surely, 2^{23535606111556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23535606111556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26076716576064).

23535606111556 is an abundant number, since it is smaller than the sum of its proper divisors (28617827040572).

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

23535606111556 is a wasteful number, since it uses less digits than its factorization.

23535606111556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24942 (or 24867 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 49.

The spelling of 23535606111556 in words is "twenty-three trillion, five hundred thirty-five billion, six hundred six million, one hundred eleven thousand, five hundred fifty-six".