42045155663 has 16 divisors (see below), whose sum is σ = 48892273920. Its totient is φ = 35408860800.

The previous prime is 42045155627. The next prime is 42045155687. The reversal of 42045155663 is 36655154024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42045155663 - 2¹⁰ = 42045154639 is a prime.

It is a super-2 number, since 2×42045155663² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42045155663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42045155063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771143 + ... + 823863.

It is an arithmetic number, because the mean of its divisors is an integer number (3055767120).

Almost surely, 2^42045155663 is an apocalyptic number.

42045155663 is a deficient number, since it is larger than the sum of its proper divisors (6847118257).

42045155663 is a wasteful number, since it uses less digits than its factorization.

42045155663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54718.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 42045155663 in words is "forty-two billion, forty-five million, one hundred fifty-five thousand, six hundred sixty-three".