2662656636444 has 144 divisors (see below), whose sum is σ = 7274345275008. Its totient is φ = 755801165952.

The previous prime is 2662656636427. The next prime is 2662656636461. The reversal of 2662656636444 is 4446366562662.

It is an interprime number because it is at equal distance from previous prime (2662656636427) and next prime (2662656636461).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 429665554 + ... + 429671750.

It is an arithmetic number, because the mean of its divisors is an integer number (50516286632).

Almost surely, 2^{2662656636444} 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 2662656636444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3637172637504).

2662656636444 is an abundant number, since it is smaller than the sum of its proper divisors (4611688638564).

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

2662656636444 is a wasteful number, since it uses less digits than its factorization.

2662656636444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10864 (or 10855 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 60.

The spelling of 2662656636444 in words is "two trillion, six hundred sixty-two billion, six hundred fifty-six million, six hundred thirty-six thousand, four hundred forty-four".