63905250660 has 192 divisors, whose sum is σ = 186702050304. Its totient is φ = 16319116800.

The previous prime is 63905250653. The next prime is 63905250667. The reversal of 63905250660 is 6605250936.

63905250660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (63905250653) and next prime (63905250667).

It is not an unprimeable number, because it can be changed into a prime (63905250667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77273167 + ... + 77273993.

It is an arithmetic number, because the mean of its divisors is an integer number (972406512).

Almost surely, 2^63905250660 is an apocalyptic number.

63905250660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63905250660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93351025152).

63905250660 is an abundant number, since it is smaller than the sum of its proper divisors (122796799644).

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

63905250660 is a wasteful number, since it uses less digits than its factorization.

63905250660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 63905250660 in words is "sixty-three billion, nine hundred five million, two hundred fifty thousand, six hundred sixty".