64532240018 has 16 divisors (see below), whose sum is σ = 101684894400. Its totient is φ = 30656106096.

The previous prime is 64532240011. The next prime is 64532240107. The reversal of 64532240018 is 81004223546.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64532240018.

It is not an unprimeable number, because it can be changed into a prime (64532240011) 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 7 ways as a sum of consecutive naturals, for example, 4700780 + ... + 4714487.

It is an arithmetic number, because the mean of its divisors is an integer number (6355305900).

Almost surely, 2^64532240018 is an apocalyptic number.

64532240018 is a deficient number, since it is larger than the sum of its proper divisors (37152654382).

64532240018 is a wasteful number, since it uses less digits than its factorization.

64532240018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415441.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 64532240018 in words is "sixty-four billion, five hundred thirty-two million, two hundred forty thousand, eighteen".