2155116372 has 24 divisors (see below), whose sum is σ = 5103660576. Its totient is φ = 707649888.

The previous prime is 2155116347. The next prime is 2155116409. The reversal of 2155116372 is 2736115512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1339443 + ... + 1341050.

It is an arithmetic number, because the mean of its divisors is an integer number (212652524).

Almost surely, 2^2155116372 is an apocalyptic number.

It is an amenable number.

2155116372 is an abundant number, since it is smaller than the sum of its proper divisors (2948544204).

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

2155116372 is a wasteful number, since it uses less digits than its factorization.

2155116372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680567 (or 2680565 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 2155116372 is about 46423.2309517552. The cubic root of 2155116372 is about 1291.6858698516.

The spelling of 2155116372 in words is "two billion, one hundred fifty-five million, one hundred sixteen thousand, three hundred seventy-two".