7976091648 has 256 divisors, whose sum is σ = 24813123840. Its totient is φ = 2231894016.

The previous prime is 7976091631. The next prime is 7976091659. The reversal of 7976091648 is 8461906797.

It is a tau number, because it is divible by the number of its divisors (256).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46104490 + ... + 46104662.

It is an arithmetic number, because the mean of its divisors is an integer number (96926265).

Almost surely, 2^7976091648 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 7976091648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12406561920).

7976091648 is an abundant number, since it is smaller than the sum of its proper divisors (16837032192).

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

7976091648 is an equidigital number, since it uses as much as digits as its factorization.

7976091648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 7976091648 is about 89308.9673437108. The cubic root of 7976091648 is about 1998.0056492770.

The spelling of 7976091648 in words is "seven billion, nine hundred seventy-six million, ninety-one thousand, six hundred forty-eight".