23772665389 has 6 divisors (see below), whose sum is σ = 26130285230. Its totient is φ = 21611513880.

The previous prime is 23772665359. The next prime is 23772665437. The reversal of 23772665389 is 98356627732.

It can be written as a sum of positive squares in only one way, i.e., 12829413289 + 10943252100 = 113267^2 + 104610^2 .

It is not a de Polignac number, because 23772665389 - 2¹³ = 23772657197 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 (23772665359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98234034 + ... + 98234275.

Almost surely, 2^23772665389 is an apocalyptic number.

It is an amenable number.

23772665389 is a deficient number, since it is larger than the sum of its proper divisors (2357619841).

23772665389 is a wasteful number, since it uses less digits than its factorization.

23772665389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196468331 (or 196468320 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 58.

The spelling of 23772665389 in words is "twenty-three billion, seven hundred seventy-two million, six hundred sixty-five thousand, three hundred eighty-nine".