7165561380 has 24 divisors (see below), whose sum is σ = 20063572032. Its totient is φ = 1910816352.

The previous prime is 7165561327. The next prime is 7165561393. The reversal of 7165561380 is 831655617.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59712952 + ... + 59713071.

It is an arithmetic number, because the mean of its divisors is an integer number (835982168).

Almost surely, 2^7165561380 is an apocalyptic number.

It is an amenable number.

7165561380 is an abundant number, since it is smaller than the sum of its proper divisors (12898010652).

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

7165561380 is a wasteful number, since it uses less digits than its factorization.

7165561380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119426035 (or 119426033 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 7165561380 is about 84649.6389832821. The cubic root of 7165561380 is about 1927.8951324796.

The spelling of 7165561380 in words is "seven billion, one hundred sixty-five million, five hundred sixty-one thousand, three hundred eighty".