36405660066 has 16 divisors (see below), whose sum is σ = 72823771488. Its totient is φ = 12133144800.

The previous prime is 36405660047. The next prime is 36405660073. The reversal of 36405660066 is 66006650463.

It is a happy number.

It is a super-2 number, since 2×36405660066² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480580 + ... + 551151.

It is an arithmetic number, because the mean of its divisors is an integer number (4551485718).

Almost surely, 2^36405660066 is an apocalyptic number.

36405660066 is an abundant number, since it is smaller than the sum of its proper divisors (36418111422).

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

36405660066 is a wasteful number, since it uses less digits than its factorization.

36405660066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037617.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 36405660066 in words is "thirty-six billion, four hundred five million, six hundred sixty thousand, sixty-six".