63962920728 has 224 divisors, whose sum is σ = 216319564800. Its totient is φ = 17313061824.

The previous prime is 63962920691. The next prime is 63962920739. The reversal of 63962920728 is 82702926936.

It is a happy number.

63962920728 is a `hidden beast` number, since 6 + 3 + 9 + 629 + 2 + 0 + 7 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 734425 + ... + 816887.

Almost surely, 2^63962920728 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 63962920728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108159782400).

63962920728 is an abundant number, since it is smaller than the sum of its proper divisors (152356644072).

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

63962920728 is a wasteful number, since it uses less digits than its factorization.

63962920728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82513 (or 82494 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 63962920728 in words is "sixty-three billion, nine hundred sixty-two million, nine hundred twenty thousand, seven hundred twenty-eight".