63085078505 has 4 divisors (see below), whose sum is σ = 75702094212. Its totient is φ = 50468062800.

The previous prime is 63085078501. The next prime is 63085078517. The reversal of 63085078505 is 50587058036.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45961785769 + 17123292736 = 214387^2 + 130856^2 .

It is not a de Polignac number, because 63085078505 - 2² = 63085078501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63085078505.

It is not an unprimeable number, because it can be changed into a prime (63085078501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6308507846 + ... + 6308507855.

It is an arithmetic number, because the mean of its divisors is an integer number (18925523553).

Almost surely, 2^63085078505 is an apocalyptic number.

It is an amenable number.

63085078505 is a deficient number, since it is larger than the sum of its proper divisors (12617015707).

63085078505 is a wasteful number, since it uses less digits than its factorization.

63085078505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12617015706.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 63085078505 in words is "sixty-three billion, eighty-five million, seventy-eight thousand, five hundred five".