64866066846 has 16 divisors (see below), whose sum is σ = 148265295744. Its totient is φ = 18533161944.

The previous prime is 64866066821. The next prime is 64866066851.

It is a happy number.

64866066846 is nontrivially palindromic in base 10.

64866066846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×64866066846³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64866066846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772215040 + ... + 772215123.

It is an arithmetic number, because the mean of its divisors is an integer number (9266580984).

Almost surely, 2^64866066846 is an apocalyptic number.

64866066846 is an abundant number, since it is smaller than the sum of its proper divisors (83399228898).

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

64866066846 is a wasteful number, since it uses less digits than its factorization.

64866066846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544430175.

The product of its (nonzero) digits is 47775744, while the sum is 60.

The spelling of 64866066846 in words is "sixty-four billion, eight hundred sixty-six million, sixty-six thousand, eight hundred forty-six".