23201673136447 has 16 divisors (see below), whose sum is σ = 25846342604320. Its totient is φ = 20688178730112.

The previous prime is 23201673136409. The next prime is 23201673136487. The reversal of 23201673136447 is 74463137610232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23201673136447 - 2⁷ = 23201673136319 is a prime.

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 23201673136447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201673136487) 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, 173445108 + ... + 173578825.

It is an arithmetic number, because the mean of its divisors is an integer number (1615396412770).

Almost surely, 2^{23201673136447} is an apocalyptic number.

23201673136447 is a deficient number, since it is larger than the sum of its proper divisors (2644669467873).

23201673136447 is a wasteful number, since it uses less digits than its factorization.

23201673136447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347024122.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 23201673136447 in words is "twenty-three trillion, two hundred one billion, six hundred seventy-three million, one hundred thirty-six thousand, four hundred forty-seven".