63243708255 has 256 divisors, whose sum is σ = 141073121280. Its totient is φ = 26174016000.

The previous prime is 63243708239. The next prime is 63243708271. The reversal of 63243708255 is 55280734236.

63243708255 is a `hidden beast` number, since 6 + 3 + 24 + 370 + 8 + 255 = 666.

It is an interprime number because it is at equal distance from previous prime (63243708239) and next prime (63243708271).

It is not a de Polignac number, because 63243708255 - 2⁴ = 63243708239 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 63243708255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 191068440 + ... + 191068770.

It is an arithmetic number, because the mean of its divisors is an integer number (551066880).

Almost surely, 2^63243708255 is an apocalyptic number.

63243708255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

63243708255 is an abundant number, since it is smaller than the sum of its proper divisors (77829413025).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63243708255 is a wasteful number, since it uses less digits than its factorization.

63243708255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 63243708255 in words is "sixty-three billion, two hundred forty-three million, seven hundred eight thousand, two hundred fifty-five".