23778485817 has 8 divisors (see below), whose sum is σ = 31719760800. Its totient is φ = 15844767360.

The previous prime is 23778485767. The next prime is 23778485827. The reversal of 23778485817 is 71858487732.

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

It is not a de Polignac number, because 23778485817 - 2²³ = 23770097209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23778485827) 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, 1881784 + ... + 1894377.

It is an arithmetic number, because the mean of its divisors is an integer number (3964970100).

Almost surely, 2^23778485817 is an apocalyptic number.

It is an amenable number.

23778485817 is a deficient number, since it is larger than the sum of its proper divisors (7941274983).

23778485817 is a wasteful number, since it uses less digits than its factorization.

23778485817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778263.

The product of its digits is 21073920, while the sum is 60.

The spelling of 23778485817 in words is "twenty-three billion, seven hundred seventy-eight million, four hundred eighty-five thousand, eight hundred seventeen".