66675867567782 has 32 divisors (see below), whose sum is σ = 114861535678080. Its totient is φ = 28708808244480.

The previous prime is 66675867567733. The next prime is 66675867567833. The reversal of 66675867567782 is 28776576857666.

It is a junction number, because it is equal to n+sod(n) for n = 66675867567694 and 66675867567703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5476448 + ... + 12780579.

It is an arithmetic number, because the mean of its divisors is an integer number (3589422989940).

Almost surely, 2^{66675867567782} is an apocalyptic number.

66675867567782 is a deficient number, since it is larger than the sum of its proper divisors (48185668110298).

66675867567782 is a wasteful number, since it uses less digits than its factorization.

66675867567782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18265796.

The product of its digits is 59744563200, while the sum is 86.

The spelling of 66675867567782 in words is "sixty-six trillion, six hundred seventy-five billion, eight hundred sixty-seven million, five hundred sixty-seven thousand, seven hundred eighty-two".