23665216516 has 6 divisors (see below), whose sum is σ = 41414128910. Its totient is φ = 11832608256.

The previous prime is 23665216499. The next prime is 23665216517. The reversal of 23665216516 is 61561256632.

It can be written as a sum of positive squares in only one way, i.e., 22198020100 + 1467196416 = 148990^2 + 38304^2 .

It is not an unprimeable number, because it can be changed into a prime (23665216517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2958152061 + ... + 2958152068.

Almost surely, 2^23665216516 is an apocalyptic number.

It is an amenable number.

23665216516 is a deficient number, since it is larger than the sum of its proper divisors (17748912394).

23665216516 is a wasteful number, since it uses less digits than its factorization.

23665216516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916304133 (or 5916304131 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The spelling of 23665216516 in words is "twenty-three billion, six hundred sixty-five million, two hundred sixteen thousand, five hundred sixteen".