23969499487 has 4 divisors (see below), whose sum is σ = 23975294760. Its totient is φ = 23963704216.

The previous prime is 23969499467. The next prime is 23969499511. The reversal of 23969499487 is 78499496932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23969499487 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 (23969499467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891428 + ... + 2899705.

It is an arithmetic number, because the mean of its divisors is an integer number (5993823690).

Almost surely, 2^23969499487 is an apocalyptic number.

23969499487 is a deficient number, since it is larger than the sum of its proper divisors (5795273).

23969499487 is an equidigital number, since it uses as much as digits as its factorization.

23969499487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795272.

The product of its digits is 211631616, while the sum is 70.

The spelling of 23969499487 in words is "twenty-three billion, nine hundred sixty-nine million, four hundred ninety-nine thousand, four hundred eighty-seven".