66569000782 has 32 divisors (see below), whose sum is σ = 104567629824. Its totient is φ = 31746103200.

The previous prime is 66569000779. The next prime is 66569000801. The reversal of 66569000782 is 28700096566.

It is a happy number.

It is a super-2 number, since 2×66569000782² (a number of 22 digits) contains 22 as substring.

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, 2151103 + ... + 2181829.

It is an arithmetic number, because the mean of its divisors is an integer number (3267738432).

Almost surely, 2^66569000782 is an apocalyptic number.

66569000782 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66569000782 is a deficient number, since it is larger than the sum of its proper divisors (37998629042).

66569000782 is a wasteful number, since it uses less digits than its factorization.

66569000782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31264.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 66569000782 in words is "sixty-six billion, five hundred sixty-nine million, seven hundred eighty-two", and thus it is an aban number.