23405769018 has 32 divisors (see below), whose sum is σ = 52043745600. Its totient is φ = 7797284208.

The previous prime is 23405768989. The next prime is 23405769019. The reversal of 23405769018 is 81096750432.

23405769018 is a `hidden beast` number, since 23 + 40 + 576 + 9 + 0 + 18 = 666.

It is not an unprimeable number, because it can be changed into a prime (23405769019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36588 + ... + 219431.

It is an arithmetic number, because the mean of its divisors is an integer number (1626367050).

It is a 1-persistent number, because it is pandigital, but 2⋅23405769018 = 46811538036 is not.

Almost surely, 2^23405769018 is an apocalyptic number.

23405769018 is an abundant number, since it is smaller than the sum of its proper divisors (28637976582).

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

23405769018 is a wasteful number, since it uses less digits than its factorization.

23405769018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257723 (or 257717 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 23405769018 in words is "twenty-three billion, four hundred five million, seven hundred sixty-nine thousand, eighteen".