7908786925664 has 72 divisors (see below), whose sum is σ = 16449298145280. Its totient is φ = 3742563762432.

The previous prime is 7908786925639. The next prime is 7908786925789. The reversal of 7908786925664 is 4665296878097.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11364257 + ... + 12040095.

It is an arithmetic number, because the mean of its divisors is an integer number (228462474240).

Almost surely, 2^{7908786925664} 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 7908786925664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8224649072640).

7908786925664 is an abundant number, since it is smaller than the sum of its proper divisors (8540511219616).

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

7908786925664 is a wasteful number, since it uses less digits than its factorization.

7908786925664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676900 (or 676873 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 77.

The spelling of 7908786925664 in words is "seven trillion, nine hundred eight billion, seven hundred eighty-six million, nine hundred twenty-five thousand, six hundred sixty-four".