63128317285 has 24 divisors (see below), whose sum is σ = 87219166176. Its totient is φ = 43495094880.

The previous prime is 63128317279. The next prime is 63128317313. The reversal of 63128317285 is 58271382136.

It is not a de Polignac number, because 63128317285 - 2³ = 63128317277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1569879 + ... + 1609588.

It is an arithmetic number, because the mean of its divisors is an integer number (3634131924).

Almost surely, 2^63128317285 is an apocalyptic number.

It is an amenable number.

63128317285 is a deficient number, since it is larger than the sum of its proper divisors (24090848891).

63128317285 is a wasteful number, since it uses less digits than its factorization.

63128317285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179521 (or 3179502 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The spelling of 63128317285 in words is "sixty-three billion, one hundred twenty-eight million, three hundred seventeen thousand, two hundred eighty-five".