6915164561 has 8 divisors (see below), whose sum is σ = 7057775040. Its totient is φ = 6773401008.

The previous prime is 6915164527. The next prime is 6915164573. The reversal of 6915164561 is 1654615196.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6915164561 - 2¹⁰ = 6915163537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6915164261) 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, 195221 + ... + 227906.

It is an arithmetic number, because the mean of its divisors is an integer number (882221880).

Almost surely, 2^6915164561 is an apocalyptic number.

It is an amenable number.

6915164561 is a deficient number, since it is larger than the sum of its proper divisors (142610479).

6915164561 is a wasteful number, since it uses less digits than its factorization.

6915164561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423463.

The product of its digits is 194400, while the sum is 44.

The square root of 6915164561 is about 83157.4684619487. The cubic root of 6915164561 is about 1905.1719256153.

The spelling of 6915164561 in words is "six billion, nine hundred fifteen million, one hundred sixty-four thousand, five hundred sixty-one".