23987964545 has 8 divisors (see below), whose sum is σ = 28794752424. Its totient is φ = 19184241664.

The previous prime is 23987964541. The next prime is 23987964551. The reversal of 23987964545 is 54546978932.

It can be written as a sum of positive squares in 4 ways, for example, as 3150464641 + 20837499904 = 56129^2 + 144352^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23987964545 - 2² = 23987964541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23987964541) 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, 748994 + ... + 780363.

It is an arithmetic number, because the mean of its divisors is an integer number (3599344053).

Almost surely, 2^23987964545 is an apocalyptic number.

It is an amenable number.

23987964545 is a deficient number, since it is larger than the sum of its proper divisors (4806787879).

23987964545 is a wasteful number, since it uses less digits than its factorization.

23987964545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532499.

The product of its digits is 65318400, while the sum is 62.

The spelling of 23987964545 in words is "twenty-three billion, nine hundred eighty-seven million, nine hundred sixty-four thousand, five hundred forty-five".