155220986363 has 2 divisors, whose sum is σ = 155220986364. Its totient is φ = 155220986362.

The previous prime is 155220986309. The next prime is 155220986387. The reversal of 155220986363 is 363689022551.

155220986363 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 is an emirp because it is prime and its reverse (363689022551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155220986363 - 2⁶ = 155220986299 is a prime.

It is not a weakly prime, because it can be changed into another prime (155220986303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77610493181 + 77610493182.

It is an arithmetic number, because the mean of its divisors is an integer number (77610493182).

Almost surely, 2^155220986363 is an apocalyptic number.

155220986363 is a deficient number, since it is larger than the sum of its proper divisors (1).

155220986363 is an equidigital number, since it uses as much as digits as its factorization.

155220986363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 155220986363 in words is "one hundred fifty-five billion, two hundred twenty million, nine hundred eighty-six thousand, three hundred sixty-three".