23479371887 has 4 divisors (see below), whose sum is σ = 24052039536. Its totient is φ = 22906704240.

The previous prime is 23479371871. The next prime is 23479371889. The reversal of 23479371887 is 78817397432.

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

It is a cyclic number.

It is not a de Polignac number, because 23479371887 - 2⁴ = 23479371871 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 (23479371889) 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, 286333763 + ... + 286333844.

It is an arithmetic number, because the mean of its divisors is an integer number (6013009884).

Almost surely, 2^23479371887 is an apocalyptic number.

23479371887 is a deficient number, since it is larger than the sum of its proper divisors (572667649).

23479371887 is an equidigital number, since it uses as much as digits as its factorization.

23479371887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572667648.

The product of its digits is 14224896, while the sum is 59.

The spelling of 23479371887 in words is "twenty-three billion, four hundred seventy-nine million, three hundred seventy-one thousand, eight hundred eighty-seven".