155641346563 has 2 divisors, whose sum is σ = 155641346564. Its totient is φ = 155641346562.

The previous prime is 155641346543. The next prime is 155641346579. The reversal of 155641346563 is 365643146551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155641346563 - 2¹⁷ = 155641215491 is a prime.

It is not a weakly prime, because it can be changed into another prime (155641346543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77820673281 + 77820673282.

It is an arithmetic number, because the mean of its divisors is an integer number (77820673282).

Almost surely, 2^155641346563 is an apocalyptic number.

155641346563 is a deficient number, since it is larger than the sum of its proper divisors (1).

155641346563 is an equidigital number, since it uses as much as digits as its factorization.

155641346563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 49.

The spelling of 155641346563 in words is "one hundred fifty-five billion, six hundred forty-one million, three hundred forty-six thousand, five hundred sixty-three".