23345666778 has 16 divisors (see below), whose sum is σ = 53361524160. Its totient is φ = 6670190496.

The previous prime is 23345666759. The next prime is 23345666783. The reversal of 23345666778 is 87766654332.

It is a plaindrome in base 10.

It is a zygodrome in base 9.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 277924563 + ... + 277924646.

It is an arithmetic number, because the mean of its divisors is an integer number (3335095260).

Almost surely, 2^23345666778 is an apocalyptic number.

23345666778 is an abundant number, since it is smaller than the sum of its proper divisors (30015857382).

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

23345666778 is a wasteful number, since it uses less digits than its factorization.

23345666778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555849221.

The product of its digits is 30481920, while the sum is 57.

The spelling of 23345666778 in words is "twenty-three billion, three hundred forty-five million, six hundred sixty-six thousand, seven hundred seventy-eight".