155434440013297 has 2 divisors, whose sum is σ = 155434440013298. Its totient is φ = 155434440013296.

The previous prime is 155434440013273. The next prime is 155434440013339. The reversal of 155434440013297 is 792310044434551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121859322298081 + 33575117715216 = 11038991^2 + 5794404^2 .

It is a cyclic number.

It is not a de Polignac number, because 155434440013297 - 2¹⁵ = 155434439980529 is a prime.

It is not a weakly prime, because it can be changed into another prime (155434440053297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77717220006648 + 77717220006649.

It is an arithmetic number, because the mean of its divisors is an integer number (77717220006649).

Almost surely, 2^{155434440013297} is an apocalyptic number.

It is an amenable number.

155434440013297 is a deficient number, since it is larger than the sum of its proper divisors (1).

155434440013297 is an equidigital number, since it uses as much as digits as its factorization.

155434440013297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 155434440013297 in words is "one hundred fifty-five trillion, four hundred thirty-four billion, four hundred forty million, thirteen thousand, two hundred ninety-seven".