64771843060 has 24 divisors (see below), whose sum is σ = 136066994280. Its totient is φ = 25899951744.

The previous prime is 64771843057. The next prime is 64771843067. The reversal of 64771843060 is 6034817746.

It can be written as a sum of positive squares in 4 ways, for example, as 3627411984 + 61144431076 = 60228^2 + 247274^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64771843060.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64771843067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488475 + ... + 606754.

It is an arithmetic number, because the mean of its divisors is an integer number (5669458095).

Almost surely, 2^64771843060 is an apocalyptic number.

It is an amenable number.

64771843060 is an abundant number, since it is smaller than the sum of its proper divisors (71295151220).

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

64771843060 is a wasteful number, since it uses less digits than its factorization.

64771843060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098195 (or 1098193 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 64771843060 in words is "sixty-four billion, seven hundred seventy-one million, eight hundred forty-three thousand, sixty".