23541564653 has 4 divisors (see below), whose sum is σ = 23554995708. Its totient is φ = 23528133600.

The previous prime is 23541564619. The next prime is 23541564701. The reversal of 23541564653 is 35646514532.

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 1178754889 + 22362809764 = 34333^2 + 149542^2 .

It is a cyclic number.

It is not a de Polignac number, because 23541564653 - 2²⁴ = 23524787437 is a prime.

It is a super-2 number, since 2×23541564653² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23541564953) 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, 6712898 + ... + 6716403.

It is an arithmetic number, because the mean of its divisors is an integer number (5888748927).

Almost surely, 2^23541564653 is an apocalyptic number.

It is an amenable number.

23541564653 is a deficient number, since it is larger than the sum of its proper divisors (13431055).

23541564653 is a wasteful number, since it uses less digits than its factorization.

23541564653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13431054.

The product of its digits is 1296000, while the sum is 44.

The spelling of 23541564653 in words is "twenty-three billion, five hundred forty-one million, five hundred sixty-four thousand, six hundred fifty-three".