2516661597 has 8 divisors (see below), whose sum is σ = 3446239456. Its totient is φ = 1632429072.

The previous prime is 2516661529. The next prime is 2516661601. The reversal of 2516661597 is 7951666152.

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

It is not a de Polignac number, because 2516661597 - 2⁸ = 2516661341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516661097) 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, 11336203 + ... + 11336424.

It is an arithmetic number, because the mean of its divisors is an integer number (430779932).

Almost surely, 2^2516661597 is an apocalyptic number.

It is an amenable number.

2516661597 is a deficient number, since it is larger than the sum of its proper divisors (929577859).

2516661597 is a wasteful number, since it uses less digits than its factorization.

2516661597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22672667.

The product of its digits is 680400, while the sum is 48.

The square root of 2516661597 is about 50166.3392824312. The cubic root of 2516661597 is about 1360.2172369606.

The spelling of 2516661597 in words is "two billion, five hundred sixteen million, six hundred sixty-one thousand, five hundred ninety-seven".