7921275760 has 40 divisors (see below), whose sum is σ = 19052039520. Its totient is φ = 3059250432.

The previous prime is 7921275757. The next prime is 7921275767. The reversal of 7921275760 is 675721297.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7921275760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7921275767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704852 + ... + 1709491.

It is an arithmetic number, because the mean of its divisors is an integer number (476300988).

Almost surely, 2^7921275760 is an apocalyptic number.

It is an amenable number.

7921275760 is an abundant number, since it is smaller than the sum of its proper divisors (11130763760).

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

7921275760 is a wasteful number, since it uses less digits than its factorization.

7921275760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414385 (or 3414379 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 7921275760 is about 89001.5491999999. The cubic root of 7921275760 is about 1993.4180091272.

The spelling of 7921275760 in words is "seven billion, nine hundred twenty-one million, two hundred seventy-five thousand, seven hundred sixty".