64768227216 has 160 divisors (see below), whose sum is σ = 219583564800. Its totient is φ = 15937482240.

The previous prime is 64768227187. The next prime is 64768227259. The reversal of 64768227216 is 61272286746.

It is a super-2 number, since 2×64768227216² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 390931 + ... + 531378.

It is an arithmetic number, because the mean of its divisors is an integer number (1372397280).

Almost surely, 2^64768227216 is an apocalyptic number.

64768227216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64768227216 is an abundant number, since it is smaller than the sum of its proper divisors (154815337584).

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

64768227216 is a wasteful number, since it uses less digits than its factorization.

64768227216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922357 (or 922351 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The spelling of 64768227216 in words is "sixty-four billion, seven hundred sixty-eight million, two hundred twenty-seven thousand, two hundred sixteen".