155122340135393 has 2 divisors, whose sum is σ = 155122340135394. Its totient is φ = 155122340135392.

The previous prime is 155122340135353. The next prime is 155122340135431. The reversal of 155122340135393 is 393531043221551.

It is a happy number.

155122340135393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105780875310289 + 49341464825104 = 10284983^2 + 7024348^2 .

It is a cyclic number.

It is not a de Polignac number, because 155122340135393 - 2³⁸ = 154847462228449 is a prime.

It is not a weakly prime, because it can be changed into another prime (155122340135303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77561170067696 + 77561170067697.

It is an arithmetic number, because the mean of its divisors is an integer number (77561170067697).

Almost surely, 2^{155122340135393} is an apocalyptic number.

It is an amenable number.

155122340135393 is a deficient number, since it is larger than the sum of its proper divisors (1).

155122340135393 is an equidigital number, since it uses as much as digits as its factorization.

155122340135393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 155122340135393 in words is "one hundred fifty-five trillion, one hundred twenty-two billion, three hundred forty million, one hundred thirty-five thousand, three hundred ninety-three".