5150616561 has 24 divisors (see below), whose sum is σ = 7646398760. Its totient is φ = 3338516736.

The previous prime is 5150616553. The next prime is 5150616563. The reversal of 5150616561 is 1656160515.

It can be written as a sum of positive squares in 4 ways, for example, as 4782552336 + 368064225 = 69156^2 + 19185^2 .

It is not a de Polignac number, because 5150616561 - 2³ = 5150616553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5150616563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530991 + ... + 540603.

Almost surely, 2^5150616561 is an apocalyptic number.

It is an amenable number.

5150616561 is a deficient number, since it is larger than the sum of its proper divisors (2495782199).

5150616561 is a wasteful number, since it uses less digits than its factorization.

5150616561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265 (or 11262 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 5150616561 is about 71767.7961275111. The cubic root of 5150616561 is about 1726.9764154423.

The spelling of 5150616561 in words is "five billion, one hundred fifty million, six hundred sixteen thousand, five hundred sixty-one".