7699161728 has 16 divisors (see below), whose sum is σ = 15338174010. Its totient is φ = 3849580800.

The previous prime is 7699161721. The next prime is 7699161733. The reversal of 7699161728 is 8271619967.

It can be written as a sum of positive squares in only one way, i.e., 7014397504 + 684764224 = 83752^2 + 26168^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (7699161721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30074723 + ... + 30074978.

Almost surely, 2^7699161728 is an apocalyptic number.

It is an amenable number.

7699161728 is a deficient number, since it is larger than the sum of its proper divisors (7639012282).

7699161728 is an equidigital number, since it uses as much as digits as its factorization.

7699161728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60149715 (or 60149703 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 56.

The square root of 7699161728 is about 87744.8672458965. The cubic root of 7699161728 is about 1974.6091607528.

The spelling of 7699161728 in words is "seven billion, six hundred ninety-nine million, one hundred sixty-one thousand, seven hundred twenty-eight".