64594493736 has 64 divisors (see below), whose sum is σ = 166767444480. Its totient is φ = 20833770240.

The previous prime is 64594493731. The next prime is 64594493741. The reversal of 64594493736 is 63739449546.

It is an interprime number because it is at equal distance from previous prime (64594493731) and next prime (64594493741).

It is a self number, because there is not a number n which added to its sum of digits gives 64594493736.

It is not an unprimeable number, because it can be changed into a prime (64594493731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40216 + ... + 361671.

It is an arithmetic number, because the mean of its divisors is an integer number (2605741320).

Almost surely, 2^64594493736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64594493736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83383722240).

64594493736 is an abundant number, since it is smaller than the sum of its proper divisors (102172950744).

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

64594493736 is a wasteful number, since it uses less digits than its factorization.

64594493736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402114 (or 402110 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 60.

The spelling of 64594493736 in words is "sixty-four billion, five hundred ninety-four million, four hundred ninety-three thousand, seven hundred thirty-six".