23985026641 has 3 divisors (see below), whose sum is σ = 23985181513. Its totient is φ = 23984871770.

The previous prime is 23985026629. The next prime is 23985026671. The reversal of 23985026641 is 14662058932.

The square root of 23985026641 is 154871.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 23985026641 - 2¹¹ = 23985024593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23985026591 and 23985026600.

It is not an unprimeable number, because it can be changed into a prime (23985026621) 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 2 ways as a sum of consecutive naturals, for example, 77436 + ... + 232306.

Almost surely, 2^23985026641 is an apocalyptic number.

23985026641 is the 154871-st square number.

23985026641 is the 77436-th centered octagonal number.

It is an amenable number.

23985026641 is a deficient number, since it is larger than the sum of its proper divisors (154872).

23985026641 is an frugal number, since it uses more digits than its factorization.

23985026641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309742 (or 154871 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 23985026641 in words is "twenty-three billion, nine hundred eighty-five million, twenty-six thousand, six hundred forty-one".