23440005513015 has 128 divisors (see below), whose sum is σ = 48703623628800. Its totient is φ = 9348317153280.

The previous prime is 23440005513011. The next prime is 23440005513059. The reversal of 23440005513015 is 51031550004432.

It is not a de Polignac number, because 23440005513015 - 2² = 23440005513011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440005513011) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9845241 + ... + 11992029.

It is an arithmetic number, because the mean of its divisors is an integer number (380497059600).

Almost surely, 2^{23440005513015} is an apocalyptic number.

23440005513015 is an abundant number, since it is smaller than the sum of its proper divisors (25263618115785).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23440005513015 is a wasteful number, since it uses less digits than its factorization.

23440005513015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147257.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 23440005513015 its reverse (51031550004432), we get a palindrome (74471555517447).

The spelling of 23440005513015 in words is "twenty-three trillion, four hundred forty billion, five million, five hundred thirteen thousand, fifteen".