23199907723493 has 2 divisors, whose sum is σ = 23199907723494. Its totient is φ = 23199907723492.

The previous prime is 23199907723459. The next prime is 23199907723529. The reversal of 23199907723493 is 39432770999132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21860094528484 + 1339813195009 = 4675478^2 + 1157503^2 .

It is a cyclic number.

It is not a de Polignac number, because 23199907723493 - 2⁶ = 23199907723429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23199907723093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11599953861746 + 11599953861747.

It is an arithmetic number, because the mean of its divisors is an integer number (11599953861747).

Almost surely, 2^{23199907723493} is an apocalyptic number.

It is an amenable number.

23199907723493 is a deficient number, since it is larger than the sum of its proper divisors (1).

23199907723493 is an equidigital number, since it uses as much as digits as its factorization.

23199907723493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138883248, while the sum is 68.

The spelling of 23199907723493 in words is "twenty-three trillion, one hundred ninety-nine billion, nine hundred seven million, seven hundred twenty-three thousand, four hundred ninety-three".