23505513062501 has 4 divisors (see below), whose sum is σ = 23747837939532. Its totient is φ = 23263188185472.

The previous prime is 23505513062477. The next prime is 23505513062587. The reversal of 23505513062501 is 10526031550532.

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 7690582776100 + 15814930286401 = 2773190^2 + 3976799^2 .

It is a cyclic number.

It is not a de Polignac number, because 23505513062501 - 2²⁶ = 23505445953637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505513362501) 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 3 ways as a sum of consecutive naturals, for example, 121162438370 + ... + 121162438563.

It is an arithmetic number, because the mean of its divisors is an integer number (5936959484883).

Almost surely, 2^{23505513062501} is an apocalyptic number.

It is an amenable number.

23505513062501 is a deficient number, since it is larger than the sum of its proper divisors (242324877031).

23505513062501 is an equidigital number, since it uses as much as digits as its factorization.

23505513062501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242324877030.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 23505513062501 in words is "twenty-three trillion, five hundred five billion, five hundred thirteen million, sixty-two thousand, five hundred one".