23401544321513 has 4 divisors (see below), whose sum is σ = 23504634825360. Its totient is φ = 23298453817668.

The previous prime is 23401544321479. The next prime is 23401544321521. The reversal of 23401544321513 is 31512344510432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23401544321513 - 2²² = 23401540127209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23401544321563) 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, 51545251583 + ... + 51545252036.

It is an arithmetic number, because the mean of its divisors is an integer number (5876158706340).

Almost surely, 2^{23401544321513} is an apocalyptic number.

It is an amenable number.

23401544321513 is a deficient number, since it is larger than the sum of its proper divisors (103090503847).

23401544321513 is a wasteful number, since it uses less digits than its factorization.

23401544321513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103090503846.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 23401544321513 its reverse (31512344510432), we get a palindrome (54913888831945).

The spelling of 23401544321513 in words is "twenty-three trillion, four hundred one billion, five hundred forty-four million, three hundred twenty-one thousand, five hundred thirteen".