7130781600 has 72 divisors (see below), whose sum is σ = 23210701920. Its totient is φ = 1901541120.

The previous prime is 7130781443. The next prime is 7130781613. The reversal of 7130781600 is 61870317.

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, 1483180 + ... + 1487979.

It is an arithmetic number, because the mean of its divisors is an integer number (322370860).

Almost surely, 2^7130781600 is an apocalyptic number.

It is an amenable number.

7130781600 is an abundant number, since it is smaller than the sum of its proper divisors (16079920320).

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

7130781600 is a wasteful number, since it uses less digits than its factorization.

7130781600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971182 (or 2971169 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 7130781600 is about 84443.9553787007. The cubic root of 7130781600 is about 1924.7709043155.

The spelling of 7130781600 in words is "seven billion, one hundred thirty million, seven hundred eighty-one thousand, six hundred".