155998206041 has 2 divisors, whose sum is σ = 155998206042. Its totient is φ = 155998206040.

The previous prime is 155998205999. The next prime is 155998206151. The reversal of 155998206041 is 140602899551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155898625600 + 99580441 = 394840^2 + 9979^2 .

It is an emirp because it is prime and its reverse (140602899551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155998206041 - 2⁶ = 155998205977 is a prime.

It is not a weakly prime, because it can be changed into another prime (155998406041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77999103020 + 77999103021.

It is an arithmetic number, because the mean of its divisors is an integer number (77999103021).

Almost surely, 2^155998206041 is an apocalyptic number.

It is an amenable number.

155998206041 is a deficient number, since it is larger than the sum of its proper divisors (1).

155998206041 is an equidigital number, since it uses as much as digits as its factorization.

155998206041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 155998206041 in words is "one hundred fifty-five billion, nine hundred ninety-eight million, two hundred six thousand, forty-one".