2664622404444 has 432 divisors, whose sum is σ = 8541657169920. Its totient is φ = 632503872000.

The previous prime is 2664622404421. The next prime is 2664622404467. The reversal of 2664622404444 is 4444042264662.

It is an interprime number because it is at equal distance from previous prime (2664622404421) and next prime (2664622404467).

It is a junction number, because it is equal to n+sod(n) for n = 2664622404393 and 2664622404402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 173481637 + ... + 173496995.

It is an arithmetic number, because the mean of its divisors is an integer number (19772354560).

Almost surely, 2^{2664622404444} 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 2664622404444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4270828584960).

2664622404444 is an abundant number, since it is smaller than the sum of its proper divisors (5877034765476).

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

2664622404444 is a wasteful number, since it uses less digits than its factorization.

2664622404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15522 (or 15496 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 48.

The spelling of 2664622404444 in words is "two trillion, six hundred sixty-four billion, six hundred twenty-two million, four hundred four thousand, four hundred forty-four".