11923678625819 has 2 divisors, whose sum is σ = 11923678625820. Its totient is φ = 11923678625818.

The previous prime is 11923678625813. The next prime is 11923678625821. The reversal of 11923678625819 is 91852687632911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11923678625819 is a prime.

It is a super-2 number, since 2×11923678625819² (a number of 27 digits) contains 22 as substring.

Together with 11923678625821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11923678625813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5961839312909 + 5961839312910.

It is an arithmetic number, because the mean of its divisors is an integer number (5961839312910).

Almost surely, 2^{11923678625819} is an apocalyptic number.

11923678625819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11923678625819 is an equidigital number, since it uses as much as digits as its factorization.

11923678625819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 68.

The spelling of 11923678625819 in words is "eleven trillion, nine hundred twenty-three billion, six hundred seventy-eight million, six hundred twenty-five thousand, eight hundred nineteen".