23440511411421 has 16 divisors (see below), whose sum is σ = 33658268079744. Its totient is φ = 14424888164544.

The previous prime is 23440511411419. The next prime is 23440511411453. The reversal of 23440511411421 is 12411411504432.

It is not a de Polignac number, because 23440511411421 - 2¹ = 23440511411419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440511411411) 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, 17726395 + ... + 19002791.

It is an arithmetic number, because the mean of its divisors is an integer number (2103641754984).

Almost surely, 2^{23440511411421} is an apocalyptic number.

It is an amenable number.

23440511411421 is a deficient number, since it is larger than the sum of its proper divisors (10217756668323).

23440511411421 is a wasteful number, since it uses less digits than its factorization.

23440511411421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747300.

The product of its (nonzero) digits is 15360, while the sum is 33.

Adding to 23440511411421 its reverse (12411411504432), we get a palindrome (35851922915853).

The spelling of 23440511411421 in words is "twenty-three trillion, four hundred forty billion, five hundred eleven million, four hundred eleven thousand, four hundred twenty-one".