23387890698 has 32 divisors (see below), whose sum is σ = 53377773120. Its totient is φ = 7585261200.

The previous prime is 23387890679. The next prime is 23387890741. The reversal of 23387890698 is 89609878332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5850828 + ... + 5854823.

It is an arithmetic number, because the mean of its divisors is an integer number (1668055410).

Almost surely, 2^23387890698 is an apocalyptic number.

23387890698 is an abundant number, since it is smaller than the sum of its proper divisors (29989882422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23387890698 is a wasteful number, since it uses less digits than its factorization.

23387890698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11705699 (or 11705693 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

Adding to 23387890698 its sum of digits (63), we get a square (23387890761 = 152931²).

The spelling of 23387890698 in words is "twenty-three billion, three hundred eighty-seven million, eight hundred ninety thousand, six hundred ninety-eight".