64201822776 has 448 divisors, whose sum is σ = 233863526400. Its totient is φ = 16038653184.

The previous prime is 64201822721. The next prime is 64201822781. The reversal of 64201822776 is 67722810246.

It is a happy number.

64201822776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 10080345 + ... + 10086711.

It is an arithmetic number, because the mean of its divisors is an integer number (522016800).

Almost surely, 2^64201822776 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 64201822776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116931763200).

64201822776 is an abundant number, since it is smaller than the sum of its proper divisors (169661703624).

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

64201822776 is a wasteful number, since it uses less digits than its factorization.

64201822776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430 (or 6411 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 64201822776 in words is "sixty-four billion, two hundred one million, eight hundred twenty-two thousand, seven hundred seventy-six".