63801594066 has 64 divisors (see below), whose sum is σ = 148083397632. Its totient is φ = 17947904832.

The previous prime is 63801594029. The next prime is 63801594079. The reversal of 63801594066 is 66049510836.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7190965 + ... + 7199831.

It is an arithmetic number, because the mean of its divisors is an integer number (2313803088).

Almost surely, 2^63801594066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63801594066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74041698816).

63801594066 is an abundant number, since it is smaller than the sum of its proper divisors (84281803566).

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

63801594066 is a wasteful number, since it uses less digits than its factorization.

63801594066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 63801594066 in words is "sixty-three billion, eight hundred one million, five hundred ninety-four thousand, sixty-six".