23193181601999 has 2 divisors, whose sum is σ = 23193181602000. Its totient is φ = 23193181601998.

The previous prime is 23193181601971. The next prime is 23193181602053. The reversal of 23193181601999 is 99910618139132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23193181601999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23193181601939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11596590800999 + 11596590801000.

It is an arithmetic number, because the mean of its divisors is an integer number (11596590801000).

Almost surely, 2^{23193181601999} is an apocalyptic number.

23193181601999 is a deficient number, since it is larger than the sum of its proper divisors (1).

23193181601999 is an equidigital number, since it uses as much as digits as its factorization.

23193181601999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5668704, while the sum is 62.

The spelling of 23193181601999 in words is "twenty-three trillion, one hundred ninety-three billion, one hundred eighty-one million, six hundred one thousand, nine hundred ninety-nine".