5161111568 has 10 divisors (see below), whose sum is σ = 9999653694. Its totient is φ = 2580555776.

The previous prime is 5161111559. The next prime is 5161111577. The reversal of 5161111568 is 8651111615.

It is an interprime number because it is at equal distance from previous prime (5161111559) and next prime (5161111577).

It can be written as a sum of positive squares in only one way, i.e., 4519603984 + 641507584 = 67228^2 + 25328^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161284721 + ... + 161284752.

Almost surely, 2^5161111568 is an apocalyptic number.

It is an amenable number.

5161111568 is a deficient number, since it is larger than the sum of its proper divisors (4838542126).

5161111568 is a wasteful number, since it uses less digits than its factorization.

5161111568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322569481 (or 322569475 counting only the distinct ones).

The product of its digits is 7200, while the sum is 35.

The square root of 5161111568 is about 71840.8767207082. The cubic root of 5161111568 is about 1728.1485944033.

The spelling of 5161111568 in words is "five billion, one hundred sixty-one million, one hundred eleven thousand, five hundred sixty-eight".