63485777720 has 32 divisors (see below), whose sum is σ = 142858537920. Its totient is φ = 25391548800.

The previous prime is 63485777713. The next prime is 63485777731. The reversal of 63485777720 is 2777758436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308270 + ... + 471170.

It is an arithmetic number, because the mean of its divisors is an integer number (4464329310).

Almost surely, 2^63485777720 is an apocalyptic number.

It is an amenable number.

63485777720 is an abundant number, since it is smaller than the sum of its proper divisors (79372760200).

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

63485777720 is a wasteful number, since it uses less digits than its factorization.

63485777720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172655 (or 172651 counting only the distinct ones).

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 63485777720 in words is "sixty-three billion, four hundred eighty-five million, seven hundred seventy-seven thousand, seven hundred twenty".