64723276806 has 32 divisors (see below), whose sum is σ = 131907460608. Its totient is φ = 21164388960.

The previous prime is 64723276789. The next prime is 64723276811. The reversal of 64723276806 is 60867232746.

It is a super-3 number, since 3×64723276806³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4281321 + ... + 4296411.

It is an arithmetic number, because the mean of its divisors is an integer number (4122108144).

Almost surely, 2^64723276806 is an apocalyptic number.

64723276806 is an abundant number, since it is smaller than the sum of its proper divisors (67184183802).

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

64723276806 is a wasteful number, since it uses less digits than its factorization.

64723276806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28636.

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 64723276806 in words is "sixty-four billion, seven hundred twenty-three million, two hundred seventy-six thousand, eight hundred six".