23569980145 has 16 divisors (see below), whose sum is σ = 28407403728. Its totient is φ = 18773770240.

The previous prime is 23569980131. The next prime is 23569980209. The reversal of 23569980145 is 54108996532.

It can be written as a sum of positive squares in 8 ways, for example, as 317694976 + 23252285169 = 17824^2 + 152487^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23569980145 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23569980092 and 23569980101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4830447 + ... + 4835323.

It is an arithmetic number, because the mean of its divisors is an integer number (1775462733).

Almost surely, 2^23569980145 is an apocalyptic number.

It is an amenable number.

23569980145 is a deficient number, since it is larger than the sum of its proper divisors (4837423583).

23569980145 is a wasteful number, since it uses less digits than its factorization.

23569980145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900.

The product of its (nonzero) digits is 2332800, while the sum is 52.

It can be divided in two parts, 235699 and 80145, that added together give a square (315844 = 562²).

The spelling of 23569980145 in words is "twenty-three billion, five hundred sixty-nine million, nine hundred eighty thousand, one hundred forty-five".