63739256680 has 256 divisors, whose sum is σ = 174905568000. Its totient is φ = 20603289600.

The previous prime is 63739256627. The next prime is 63739256701. The reversal of 63739256680 is 8665293736.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76886506 + ... + 76887334.

It is an arithmetic number, because the mean of its divisors is an integer number (683224875).

Almost surely, 2^63739256680 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 63739256680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87452784000).

63739256680 is an abundant number, since it is smaller than the sum of its proper divisors (111166311320).

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

63739256680 is a wasteful number, since it uses less digits than its factorization.

63739256680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 63739256680 in words is "sixty-three billion, seven hundred thirty-nine million, two hundred fifty-six thousand, six hundred eighty".