13623406507973 has 4 divisors (see below), whose sum is σ = 13623978295200. Its totient is φ = 13622834720748.

The previous prime is 13623406507969. The next prime is 13623406507999. The reversal of 13623406507973 is 37970560432631.

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 13623406507973 - 2² = 13623406507969 is a prime.

It is a super-2 number, since 2×13623406507973² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13623406507673) 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, 285857873 + ... + 285905526.

It is an arithmetic number, because the mean of its divisors is an integer number (3405994573800).

Almost surely, 2^{13623406507973} is an apocalyptic number.

It is an amenable number.

13623406507973 is a deficient number, since it is larger than the sum of its proper divisors (571787227).

13623406507973 is an equidigital number, since it uses as much as digits as its factorization.

13623406507973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571787226.

The product of its (nonzero) digits is 17146080, while the sum is 56.

The spelling of 13623406507973 in words is "thirteen trillion, six hundred twenty-three billion, four hundred six million, five hundred seven thousand, nine hundred seventy-three".