23761024561 has 4 divisors (see below), whose sum is σ = 24403214452. Its totient is φ = 23118834672.

The previous prime is 23761024549. The next prime is 23761024589. The reversal of 23761024561 is 16542016732.

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 18988840000 + 4772184561 = 137800^2 + 69081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23761024561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 642189853 = 23761024561 / (2 + 3 + 7 + 6 + 1 + 0 + 2 + 4 + 5 + 6 + 1).

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 23761024561.

It is not an unprimeable number, because it can be changed into a prime (23761024531) 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, 321094890 + ... + 321094963.

It is an arithmetic number, because the mean of its divisors is an integer number (6100803613).

Almost surely, 2^23761024561 is an apocalyptic number.

It is an amenable number.

23761024561 is a deficient number, since it is larger than the sum of its proper divisors (642189891).

23761024561 is an equidigital number, since it uses as much as digits as its factorization.

23761024561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642189890.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 23761024561 in words is "twenty-three billion, seven hundred sixty-one million, twenty-four thousand, five hundred sixty-one".