63905278520255 has 8 divisors (see below), whose sum is σ = 76692741375600. Its totient is φ = 51119951382016.

The previous prime is 63905278520221. The next prime is 63905278520257. The reversal of 63905278520255 is 55202587250936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63905278520255 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63905278520194 and 63905278520203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63905278520257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533863445 + ... + 533983134.

It is an arithmetic number, because the mean of its divisors is an integer number (9586592671950).

Almost surely, 2^{63905278520255} is an apocalyptic number.

63905278520255 is a deficient number, since it is larger than the sum of its proper divisors (12787462855345).

63905278520255 is a wasteful number, since it uses less digits than its factorization.

63905278520255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067858553.

The product of its (nonzero) digits is 45360000, while the sum is 59.

The spelling of 63905278520255 in words is "sixty-three trillion, nine hundred five billion, two hundred seventy-eight million, five hundred twenty thousand, two hundred fifty-five".