155040313013 has 2 divisors, whose sum is σ = 155040313014. Its totient is φ = 155040313012.

The previous prime is 155040312983. The next prime is 155040313019. The reversal of 155040313013 is 310313040551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90431315524 + 64608997489 = 300718^2 + 254183^2 .

It is a cyclic number.

It is not a de Polignac number, because 155040313013 - 2¹⁴ = 155040296629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155040313019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77520156506 + 77520156507.

It is an arithmetic number, because the mean of its divisors is an integer number (77520156507).

Almost surely, 2^155040313013 is an apocalyptic number.

It is an amenable number.

155040313013 is a deficient number, since it is larger than the sum of its proper divisors (1).

155040313013 is an equidigital number, since it uses as much as digits as its factorization.

155040313013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 155040313013 its reverse (310313040551), we get a palindrome (465353353564).

The spelling of 155040313013 in words is "one hundred fifty-five billion, forty million, three hundred thirteen thousand, thirteen".