123320520168619 has 2 divisors, whose sum is σ = 123320520168620. Its totient is φ = 123320520168618.

The previous prime is 123320520168613. The next prime is 123320520168623. The reversal of 123320520168619 is 916861025023321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123320520168619 - 2⁹ = 123320520168107 is a prime.

It is a super-2 number, since 2×123320520168619² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123320520168613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660260084309 + 61660260084310.

It is an arithmetic number, because the mean of its divisors is an integer number (61660260084310).

Almost surely, 2^{123320520168619} is an apocalyptic number.

123320520168619 is a deficient number, since it is larger than the sum of its proper divisors (1).

123320520168619 is an equidigital number, since it uses as much as digits as its factorization.

123320520168619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 123320520168619 in words is "one hundred twenty-three trillion, three hundred twenty billion, five hundred twenty million, one hundred sixty-eight thousand, six hundred nineteen".