40186536866 has 16 divisors (see below), whose sum is σ = 70753131456. Its totient is φ = 16757320176.

The previous prime is 40186536847. The next prime is 40186536883. The reversal of 40186536866 is 66863568104.

It is a super-2 number, since 2×40186536866² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38789576 + ... + 38790611.

It is an arithmetic number, because the mean of its divisors is an integer number (4422070716).

Almost surely, 2^40186536866 is an apocalyptic number.

40186536866 is a deficient number, since it is larger than the sum of its proper divisors (30566594590).

40186536866 is a wasteful number, since it uses less digits than its factorization.

40186536866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580233.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 40186536866 in words is "forty billion, one hundred eighty-six million, five hundred thirty-six thousand, eight hundred sixty-six".