23305712657473 has 4 divisors (see below), whose sum is σ = 24676636931460. Its totient is φ = 21934788383488.

The previous prime is 23305712657417. The next prime is 23305712657489. The reversal of 23305712657473 is 37475621750332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15722232126129 + 7583480531344 = 3965127^2 + 2753812^2 .

It is a cyclic number.

It is not a de Polignac number, because 23305712657473 - 2¹³ = 23305712649281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23305712655473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685462136968 + ... + 685462137001.

It is an arithmetic number, because the mean of its divisors is an integer number (6169159232865).

Almost surely, 2^{23305712657473} is an apocalyptic number.

It is an amenable number.

23305712657473 is a deficient number, since it is larger than the sum of its proper divisors (1370924273987).

23305712657473 is a wasteful number, since it uses less digits than its factorization.

23305712657473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370924273986.

The product of its (nonzero) digits is 22226400, while the sum is 55.

The spelling of 23305712657473 in words is "twenty-three trillion, three hundred five billion, seven hundred twelve million, six hundred fifty-seven thousand, four hundred seventy-three".