64765889530 has 32 divisors (see below), whose sum is σ = 116900107200. Its totient is φ = 25835010432.

The previous prime is 64765889491. The next prime is 64765889537. The reversal of 64765889530 is 3598856746.

It is a super-2 number, since 2×64765889530² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64765889537) 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 15 ways as a sum of consecutive naturals, for example, 5893581 + ... + 5904559.

It is an arithmetic number, because the mean of its divisors is an integer number (3653128350).

Almost surely, 2^64765889530 is an apocalyptic number.

64765889530 is a deficient number, since it is larger than the sum of its proper divisors (52134217670).

64765889530 is a wasteful number, since it uses less digits than its factorization.

64765889530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12558.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 64765889530 in words is "sixty-four billion, seven hundred sixty-five million, eight hundred eighty-nine thousand, five hundred thirty".