63890650784 has 96 divisors (see below), whose sum is σ = 129806639424. Its totient is φ = 30938019840.

The previous prime is 63890650777. The next prime is 63890650799. The reversal of 63890650784 is 48705609836.

63890650784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144222467 + ... + 144222909.

It is an arithmetic number, because the mean of its divisors is an integer number (1352152494).

Almost surely, 2^63890650784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63890650784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64903319712).

63890650784 is an abundant number, since it is smaller than the sum of its proper divisors (65915988640).

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

63890650784 is a wasteful number, since it uses less digits than its factorization.

63890650784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 63890650784 in words is "sixty-three billion, eight hundred ninety million, six hundred fifty thousand, seven hundred eighty-four".