2421172864 has 32 divisors (see below), whose sum is σ = 5261927040. Its totient is φ = 1100532480.

The previous prime is 2421172849. The next prime is 2421172889. The reversal of 2421172864 is 4682711242.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858384 + ... + 861199.

It is an arithmetic number, because the mean of its divisors is an integer number (164435220).

Almost surely, 2^2421172864 is an apocalyptic number.

It is an amenable number.

2421172864 is an abundant number, since it is smaller than the sum of its proper divisors (2840754176).

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

2421172864 is a wasteful number, since it uses less digits than its factorization.

2421172864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719608 (or 1719596 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 2421172864 is about 49205.4149865642. The cubic root of 2421172864 is about 1342.7915488622.

The spelling of 2421172864 in words is "two billion, four hundred twenty-one million, one hundred seventy-two thousand, eight hundred sixty-four".