64466266446 has 64 divisors (see below), whose sum is σ = 144792061440. Its totient is φ = 21259117440.

The previous prime is 64466266441. The next prime is 64466266463.

64466266446 is a `hidden beast` number, since 6 + 4 + 4 + 6 + 626 + 6 + 4 + 4 + 6 = 666.

64466266446 is nontrivially palindromic in base 10.

64466266446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 64466266392 and 64466266401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64466266441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6240966 + ... + 6251286.

It is an arithmetic number, because the mean of its divisors is an integer number (2262375960).

Almost surely, 2^64466266446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64466266446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72396030720).

64466266446 is an abundant number, since it is smaller than the sum of its proper divisors (80325794994).

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

64466266446 is a wasteful number, since it uses less digits than its factorization.

64466266446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11558 (or 11552 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 54.

The spelling of 64466266446 in words is "sixty-four billion, four hundred sixty-six million, two hundred sixty-six thousand, four hundred forty-six".