66365202678 has 16 divisors (see below), whose sum is σ = 132735668736. Its totient is φ = 22120857000.

The previous prime is 66365202653. The next prime is 66365202679. The reversal of 66365202678 is 87620256366.

It is a self number, because there is not a number n which added to its sum of digits gives 66365202678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66365202679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44698 + ... + 367053.

It is an arithmetic number, because the mean of its divisors is an integer number (8295979296).

Almost surely, 2^66365202678 is an apocalyptic number.

66365202678 is an abundant number, since it is smaller than the sum of its proper divisors (66370466058).

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

66365202678 is a wasteful number, since it uses less digits than its factorization.

66365202678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438619.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 66365202678 in words is "sixty-six billion, three hundred sixty-five million, two hundred two thousand, six hundred seventy-eight".