155111655200839 has 2 divisors, whose sum is σ = 155111655200840. Its totient is φ = 155111655200838.

The previous prime is 155111655200809. The next prime is 155111655200893. The reversal of 155111655200839 is 938002556111551.

Together with next prime (155111655200893) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155111655200839 - 2⁴³ = 146315562178631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155111655200809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77555827600419 + 77555827600420.

It is an arithmetic number, because the mean of its divisors is an integer number (77555827600420).

Almost surely, 2^{155111655200839} is an apocalyptic number.

155111655200839 is a deficient number, since it is larger than the sum of its proper divisors (1).

155111655200839 is an equidigital number, since it uses as much as digits as its factorization.

155111655200839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620000, while the sum is 52.

The spelling of 155111655200839 in words is "one hundred fifty-five trillion, one hundred eleven billion, six hundred fifty-five million, two hundred thousand, eight hundred thirty-nine".