2251246184464 has 20 divisors (see below), whose sum is σ = 4479675685804. Its totient is φ = 1095200846208.

The previous prime is 2251246184441. The next prime is 2251246184477. The reversal of 2251246184464 is 4644816421522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2174716494864 + 76529689600 = 1474692^2 + 276640^2 .

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, 1901389767 + ... + 1901390950.

Almost surely, 2^{2251246184464} is an apocalyptic number.

It is an amenable number.

2251246184464 is a deficient number, since it is larger than the sum of its proper divisors (2228429501340).

2251246184464 is a wasteful number, since it uses less digits than its factorization.

2251246184464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3802780762 (or 3802780756 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 49.

The spelling of 2251246184464 in words is "two trillion, two hundred fifty-one billion, two hundred forty-six million, one hundred eighty-four thousand, four hundred sixty-four".