23173434765 has 24 divisors (see below), whose sum is σ = 43257079320. Its totient is φ = 11408459904.

The previous prime is 23173434763. The next prime is 23173434769. The reversal of 23173434765 is 56743437132.

23173434765 is a `hidden beast` number, since 2 + 3 + 173 + 4 + 3 + 476 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 631114884 + 22542319881 = 25122^2 + 150141^2 .

It is not a de Polignac number, because 23173434765 - 2¹ = 23173434763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23173434765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23173434761) 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 23 ways as a sum of consecutive naturals, for example, 19805770 + ... + 19806939.

It is an arithmetic number, because the mean of its divisors is an integer number (1802378305).

Almost surely, 2^23173434765 is an apocalyptic number.

It is an amenable number.

23173434765 is a deficient number, since it is larger than the sum of its proper divisors (20083644555).

23173434765 is a wasteful number, since it uses less digits than its factorization.

23173434765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39612733 (or 39612730 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 45.

The spelling of 23173434765 in words is "twenty-three billion, one hundred seventy-three million, four hundred thirty-four thousand, seven hundred sixty-five".