64434331244 has 48 divisors (see below), whose sum is σ = 116857230336. Its totient is φ = 31063032000.

The previous prime is 64434331237. The next prime is 64434331261. The reversal of 64434331244 is 44213343446.

64434331244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64434331198 and 64434331207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16729919 + ... + 16733769.

It is an arithmetic number, because the mean of its divisors is an integer number (2434525632).

Almost surely, 2^64434331244 is an apocalyptic number.

It is an amenable number.

64434331244 is a deficient number, since it is larger than the sum of its proper divisors (52422899092).

64434331244 is a wasteful number, since it uses less digits than its factorization.

64434331244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886 (or 4884 counting only the distinct ones).

The product of its digits is 331776, while the sum is 38.

The spelling of 64434331244 in words is "sixty-four billion, four hundred thirty-four million, three hundred thirty-one thousand, two hundred forty-four".