23102785529 has 4 divisors (see below), whose sum is σ = 23481519780. Its totient is φ = 22724051280.

The previous prime is 23102785523. The next prime is 23102785543. The reversal of 23102785529 is 92558720132.

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 7881888400 + 15220897129 = 88780^2 + 123373^2 .

It is a cyclic number.

It is not a de Polignac number, because 23102785529 - 2²⁸ = 22834350073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23102785529.

It is not an unprimeable number, because it can be changed into a prime (23102785523) 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, 189367034 + ... + 189367155.

It is an arithmetic number, because the mean of its divisors is an integer number (5870379945).

Almost surely, 2^23102785529 is an apocalyptic number.

It is an amenable number.

23102785529 is a deficient number, since it is larger than the sum of its proper divisors (378734251).

23102785529 is an equidigital number, since it uses as much as digits as its factorization.

23102785529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378734250.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 23102785529 in words is "twenty-three billion, one hundred two million, seven hundred eighty-five thousand, five hundred twenty-nine".