7161164644 has 6 divisors (see below), whose sum is σ = 12532038134. Its totient is φ = 3580582320.

The previous prime is 7161164623. The next prime is 7161164671. The reversal of 7161164644 is 4464611617.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4457164644 + 2704000000 = 66762^2 + 52000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7161164597 and 7161164606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895145577 + ... + 895145584.

Almost surely, 2^7161164644 is an apocalyptic number.

It is an amenable number.

7161164644 is a deficient number, since it is larger than the sum of its proper divisors (5370873490).

7161164644 is a wasteful number, since it uses less digits than its factorization.

7161164644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790291165 (or 1790291163 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 7161164644 is about 84623.6647989202. The cubic root of 7161164644 is about 1927.5007376900.

The spelling of 7161164644 in words is "seven billion, one hundred sixty-one million, one hundred sixty-four thousand, six hundred forty-four".