7975400880 has 80 divisors (see below), whose sum is σ = 25798705920. Its totient is φ = 2034303744.

The previous prime is 7975400869. The next prime is 7975400911. The reversal of 7975400880 is 880045797.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 716890 + ... + 727929.

It is an arithmetic number, because the mean of its divisors is an integer number (322483824).

Almost surely, 2^7975400880 is an apocalyptic number.

It is an amenable number.

7975400880 is an abundant number, since it is smaller than the sum of its proper divisors (17823305040).

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

7975400880 is a wasteful number, since it uses less digits than its factorization.

7975400880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444858 (or 1444852 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 7975400880 is about 89305.0999663513. The cubic root of 7975400880 is about 1997.9479686370.

The spelling of 7975400880 in words is "seven billion, nine hundred seventy-five million, four hundred thousand, eight hundred eighty".