155540159713 has 2 divisors, whose sum is σ = 155540159714. Its totient is φ = 155540159712.

The previous prime is 155540159689. The next prime is 155540159813. The reversal of 155540159713 is 317951045551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126520355809 + 29019803904 = 355697^2 + 170352^2 .

It is an emirp because it is prime and its reverse (317951045551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155540159713 - 2²⁵ = 155506605281 is a prime.

It is not a weakly prime, because it can be changed into another prime (155540159113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77770079856 + 77770079857.

It is an arithmetic number, because the mean of its divisors is an integer number (77770079857).

Almost surely, 2^155540159713 is an apocalyptic number.

It is an amenable number.

155540159713 is a deficient number, since it is larger than the sum of its proper divisors (1).

155540159713 is an equidigital number, since it uses as much as digits as its factorization.

155540159713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472500, while the sum is 46.

The spelling of 155540159713 in words is "one hundred fifty-five billion, five hundred forty million, one hundred fifty-nine thousand, seven hundred thirteen".