63365605155 has 32 divisors (see below), whose sum is σ = 115046784000. Its totient is φ = 33075943776.

The previous prime is 63365605141. The next prime is 63365605189. The reversal of 63365605155 is 55150656336.

63365605155 is a `hidden beast` number, since 6 + 3 + 36 + 5 + 605 + 1 + 5 + 5 = 666.

It is not a de Polignac number, because 63365605155 - 2⁴ = 63365605139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 63365605155.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4987005 + ... + 4999694.

It is an arithmetic number, because the mean of its divisors is an integer number (3595212000).

Almost surely, 2^63365605155 is an apocalyptic number.

63365605155 is a deficient number, since it is larger than the sum of its proper divisors (51681178845).

63365605155 is a wasteful number, since it uses less digits than its factorization.

63365605155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9986760 (or 9986754 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 45.

The spelling of 63365605155 in words is "sixty-three billion, three hundred sixty-five million, six hundred five thousand, one hundred fifty-five".