64464042444 has 12 divisors (see below), whose sum is σ = 150416099064. Its totient is φ = 21488014144.

The previous prime is 64464042427. The next prime is 64464042473. The reversal of 64464042444 is 44424046446.

It is a happy number.

64464042444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×64464042444² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64464042396 and 64464042405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686001757 + ... + 2686001780.

It is an arithmetic number, because the mean of its divisors is an integer number (12534674922).

Almost surely, 2^64464042444 is an apocalyptic number.

It is an amenable number.

64464042444 is an abundant number, since it is smaller than the sum of its proper divisors (85952056620).

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

64464042444 is a wasteful number, since it uses less digits than its factorization.

64464042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372003544 (or 5372003542 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 42.

The spelling of 64464042444 in words is "sixty-four billion, four hundred sixty-four million, forty-two thousand, four hundred forty-four".