2644964475 has 24 divisors (see below), whose sum is σ = 4418102640. Its totient is φ = 1396101120.

The previous prime is 2644964473. The next prime is 2644964519. The reversal of 2644964475 is 5744694462.

It is not a de Polignac number, because 2644964475 - 2¹ = 2644964473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2644964473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174510 + ... + 189059.

It is an arithmetic number, because the mean of its divisors is an integer number (184087610).

Almost surely, 2^2644964475 is an apocalyptic number.

2644964475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2644964475 is a deficient number, since it is larger than the sum of its proper divisors (1773138165).

2644964475 is a wasteful number, since it uses less digits than its factorization.

2644964475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363679 (or 363674 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The square root of 2644964475 is about 51429.2181060533. The cubic root of 2644964475 is about 1382.9504324028.

The spelling of 2644964475 in words is "two billion, six hundred forty-four million, nine hundred sixty-four thousand, four hundred seventy-five".