2521163964 has 96 divisors (see below), whose sum is σ = 6606673920. Its totient is φ = 741657600.

The previous prime is 2521163959. The next prime is 2521163993. The reversal of 2521163964 is 4693611252.

2521163964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 1205832 + ... + 1207920.

It is an arithmetic number, because the mean of its divisors is an integer number (68819520).

Almost surely, 2^2521163964 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 2521163964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3303336960).

2521163964 is an abundant number, since it is smaller than the sum of its proper divisors (4085509956).

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

2521163964 is a wasteful number, since it uses less digits than its factorization.

2521163964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371 (or 2369 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 2521163964 is about 50211.1936125801. The cubic root of 2521163964 is about 1361.0279072976.

The spelling of 2521163964 in words is "two billion, five hundred twenty-one million, one hundred sixty-three thousand, nine hundred sixty-four".