2111551556232 has 128 divisors (see below), whose sum is σ = 5469926837760. Its totient is φ = 678831759360.

The previous prime is 2111551556171. The next prime is 2111551556249. The reversal of 2111551556232 is 2326551551112.

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, 97237408 + ... + 97259120.

It is an arithmetic number, because the mean of its divisors is an integer number (42733803420).

Almost surely, 2^{2111551556232} 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 2111551556232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734963418880).

2111551556232 is an abundant number, since it is smaller than the sum of its proper divisors (3358375281528).

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

2111551556232 is a wasteful number, since it uses less digits than its factorization.

2111551556232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23023 (or 23019 counting only the distinct ones).

The product of its digits is 90000, while the sum is 39.

The spelling of 2111551556232 in words is "two trillion, one hundred eleven billion, five hundred fifty-one million, five hundred fifty-six thousand, two hundred thirty-two".