12423540013 has 4 divisors (see below), whose sum is σ = 13077410560. Its totient is φ = 11769669468.

The previous prime is 12423540001. The next prime is 12423540029. The reversal of 12423540013 is 31004532421.

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 12423540013 - 2⁵ = 12423539981 is a prime.

It is a super-2 number, since 2×12423540013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12423540013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423240013) 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, 326935245 + ... + 326935282.

It is an arithmetic number, because the mean of its divisors is an integer number (3269352640).

Almost surely, 2^12423540013 is an apocalyptic number.

It is an amenable number.

12423540013 is a deficient number, since it is larger than the sum of its proper divisors (653870547).

12423540013 is an equidigital number, since it uses as much as digits as its factorization.

12423540013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653870546.

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 12423540013 in words is "twelve billion, four hundred twenty-three million, five hundred forty thousand, thirteen".