36665737641 has 32 divisors (see below), whose sum is σ = 58516080000. Its totient is φ = 22556574144.

The previous prime is 36665737631. The next prime is 36665737681. The reversal of 36665737641 is 14673756663.

It is a happy number.

It is not a de Polignac number, because 36665737641 - 2²⁵ = 36632183209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36665737621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270035 + ... + 1298583.

It is an arithmetic number, because the mean of its divisors is an integer number (1828627500).

Almost surely, 2^36665737641 is an apocalyptic number.

It is an amenable number.

36665737641 is a deficient number, since it is larger than the sum of its proper divisors (21850342359).

36665737641 is a wasteful number, since it uses less digits than its factorization.

36665737641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32230 (or 32224 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 54.

The spelling of 36665737641 in words is "thirty-six billion, six hundred sixty-five million, seven hundred thirty-seven thousand, six hundred forty-one".