155142445563 has 24 divisors (see below), whose sum is σ = 259930681088. Its totient is φ = 87329647152.

The previous prime is 155142445561. The next prime is 155142445571. The reversal of 155142445563 is 365544241551.

155142445563 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 42 + 4 + 45 + 563 = 666.

It is not a de Polignac number, because 155142445563 - 2¹ = 155142445561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155142445561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18373231 + ... + 18381672.

Almost surely, 2^155142445563 is an apocalyptic number.

155142445563 is a deficient number, since it is larger than the sum of its proper divisors (104788235525).

155142445563 is a wasteful number, since it uses less digits than its factorization.

155142445563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36754983 (or 36754980 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 45.

The spelling of 155142445563 in words is "one hundred fifty-five billion, one hundred forty-two million, four hundred forty-five thousand, five hundred sixty-three".