23782215669 has 16 divisors (see below), whose sum is σ = 32479774272. Its totient is φ = 15470477568.

The previous prime is 23782215643. The next prime is 23782215731. The reversal of 23782215669 is 96651228732.

It is a happy number.

It is not a de Polignac number, because 23782215669 - 2²⁰ = 23781167093 is a prime.

It is a super-2 number, since 2×23782215669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23782215869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36157 + ... + 221069.

It is an arithmetic number, because the mean of its divisors is an integer number (2029985892).

Almost surely, 2^23782215669 is an apocalyptic number.

It is an amenable number.

23782215669 is a deficient number, since it is larger than the sum of its proper divisors (8697558603).

23782215669 is a wasteful number, since it uses less digits than its factorization.

23782215669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185956.

The product of its digits is 2177280, while the sum is 51.

The spelling of 23782215669 in words is "twenty-three billion, seven hundred eighty-two million, two hundred fifteen thousand, six hundred sixty-nine".