23705436261 has 16 divisors (see below), whose sum is σ = 34043494016. Its totient is φ = 14585852736.

The previous prime is 23705436247. The next prime is 23705436263. The reversal of 23705436261 is 16263450732.

It is not a de Polignac number, because 23705436261 - 2¹³ = 23705428069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23705436263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255216 + ... + 335478.

It is an arithmetic number, because the mean of its divisors is an integer number (2127718376).

Almost surely, 2^23705436261 is an apocalyptic number.

It is an amenable number.

23705436261 is a deficient number, since it is larger than the sum of its proper divisors (10338057755).

23705436261 is a wasteful number, since it uses less digits than its factorization.

23705436261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87852.

The product of its (nonzero) digits is 181440, while the sum is 39.

Adding to 23705436261 its reverse (16263450732), we get a palindrome (39968886993).

The spelling of 23705436261 in words is "twenty-three billion, seven hundred five million, four hundred thirty-six thousand, two hundred sixty-one".