155113314919 has 2 divisors, whose sum is σ = 155113314920. Its totient is φ = 155113314918.

The previous prime is 155113314859. The next prime is 155113314929. The reversal of 155113314919 is 919413311551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155113314919 - 2⁷ = 155113314791 is a prime.

It is a super-2 number, since 2×155113314919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155113314929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77556657459 + 77556657460.

It is an arithmetic number, because the mean of its divisors is an integer number (77556657460).

Almost surely, 2^155113314919 is an apocalyptic number.

155113314919 is a deficient number, since it is larger than the sum of its proper divisors (1).

155113314919 is an equidigital number, since it uses as much as digits as its factorization.

155113314919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 43.

The spelling of 155113314919 in words is "one hundred fifty-five billion, one hundred thirteen million, three hundred fourteen thousand, nine hundred nineteen".