36161665220 has 24 divisors (see below), whose sum is σ = 77226609600. Its totient is φ = 14219501792.

The previous prime is 36161665219. The next prime is 36161665271. The reversal of 36161665220 is 2256616163.

It is a happy number.

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, 15321560 + ... + 15323919.

It is an arithmetic number, because the mean of its divisors is an integer number (3217775400).

Almost surely, 2^36161665220 is an apocalyptic number.

It is an amenable number.

36161665220 is an abundant number, since it is smaller than the sum of its proper divisors (41064944380).

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

36161665220 is a wasteful number, since it uses less digits than its factorization.

36161665220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30645547 (or 30645545 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 36161665220 in words is "thirty-six billion, one hundred sixty-one million, six hundred sixty-five thousand, two hundred twenty".