64014906438 has 144 divisors (see below), whose sum is σ = 171488977920. Its totient is φ = 17158653792.

The previous prime is 64014906437. The next prime is 64014906451. The reversal of 64014906438 is 83460941046.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64014906393 and 64014906402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64014906437) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1707531 + ... + 1744617.

It is an arithmetic number, because the mean of its divisors is an integer number (1190895680).

Almost surely, 2^64014906438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64014906438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85744488960).

64014906438 is an abundant number, since it is smaller than the sum of its proper divisors (107474071482).

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

64014906438 is a wasteful number, since it uses less digits than its factorization.

64014906438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37231 (or 37221 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 64014906438 in words is "sixty-four billion, fourteen million, nine hundred six thousand, four hundred thirty-eight".