155215223376419 has 2 divisors, whose sum is σ = 155215223376420. Its totient is φ = 155215223376418.

The previous prime is 155215223376383. The next prime is 155215223376457. The reversal of 155215223376419 is 914673322512551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155215223376419 - 2²⁴ = 155215206599203 is a prime.

It is a super-2 number, since 2×155215223376419² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155215223376469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77607611688209 + 77607611688210.

It is an arithmetic number, because the mean of its divisors is an integer number (77607611688210).

Almost surely, 2^{155215223376419} is an apocalyptic number.

155215223376419 is a deficient number, since it is larger than the sum of its proper divisors (1).

155215223376419 is an equidigital number, since it uses as much as digits as its factorization.

155215223376419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608000, while the sum is 56.

The spelling of 155215223376419 in words is "one hundred fifty-five trillion, two hundred fifteen billion, two hundred twenty-three million, three hundred seventy-six thousand, four hundred nineteen".