64345450188 has 48 divisors (see below), whose sum is σ = 150934375424. Its totient is φ = 21335175360.

The previous prime is 64345450153. The next prime is 64345450189. The reversal of 64345450188 is 88105454346.

It is not an unprimeable number, because it can be changed into a prime (64345450189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2001723 + ... + 2033613.

Almost surely, 2^64345450188 is an apocalyptic number.

It is an amenable number.

64345450188 is an abundant number, since it is smaller than the sum of its proper divisors (86588925236).

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

64345450188 is a wasteful number, since it uses less digits than its factorization.

64345450188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32782 (or 32780 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 64345450188 in words is "sixty-four billion, three hundred forty-five million, four hundred fifty thousand, one hundred eighty-eight".