2644440444462 has 64 divisors (see below), whose sum is σ = 5326471130688. Its totient is φ = 875242368000.

The previous prime is 2644440444449. The next prime is 2644440444493.

It is a happy number.

2644440444462 is nontrivially palindromic in base 10.

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, 924304912 + ... + 924307772.

It is an arithmetic number, because the mean of its divisors is an integer number (83226111417).

Almost surely, 2^{2644440444462} is an apocalyptic number.

2644440444462 is an abundant number, since it is smaller than the sum of its proper divisors (2682030686226).

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

2644440444462 is a wasteful number, since it uses less digits than its factorization.

2644440444462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885.

The product of its (nonzero) digits is 9437184, while the sum is 48.

The spelling of 2644440444462 in words is "two trillion, six hundred forty-four billion, four hundred forty million, four hundred forty-four thousand, four hundred sixty-two".