64240849764 has 384 divisors, whose sum is σ = 223233024000. Its totient is φ = 15496137216.

The previous prime is 64240849763. The next prime is 64240849819. The reversal of 64240849764 is 46794804246.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 64240849764.

It is not an unprimeable number, because it can be changed into a prime (64240849763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5409297 + ... + 5421159.

It is an arithmetic number, because the mean of its divisors is an integer number (581336000).

Almost surely, 2^64240849764 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 64240849764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111616512000).

64240849764 is an abundant number, since it is smaller than the sum of its proper divisors (158992174236).

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

64240849764 is a wasteful number, since it uses less digits than its factorization.

64240849764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944 (or 11936 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 54.

The spelling of 64240849764 in words is "sixty-four billion, two hundred forty million, eight hundred forty-nine thousand, seven hundred sixty-four".