64687278360 has 64 divisors (see below), whose sum is σ = 194116020480. Its totient is φ = 17245124480.

The previous prime is 64687278347. The next prime is 64687278361. The reversal of 64687278360 is 6387278646.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64687278360.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64687278361) by changing a digit.

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, 367099 + ... + 513941.

It is an arithmetic number, because the mean of its divisors is an integer number (3033062820).

Almost surely, 2^64687278360 is an apocalyptic number.

64687278360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64687278360 is an abundant number, since it is smaller than the sum of its proper divisors (129428742120).

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

64687278360 is a wasteful number, since it uses less digits than its factorization.

64687278360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150528 (or 150524 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 64687278360 in words is "sixty-four billion, six hundred eighty-seven million, two hundred seventy-eight thousand, three hundred sixty".