36645540723 has 80 divisors (see below), whose sum is σ = 61187094144. Its totient is φ = 21669690240.

The previous prime is 36645540721. The next prime is 36645540739. The reversal of 36645540723 is 32704554663.

36645540723 is a `hidden beast` number, since 3 + 66 + 45 + 540 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 36645540723 - 2¹ = 36645540721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36645540721) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 6384711 + ... + 6390447.

Almost surely, 2^36645540723 is an apocalyptic number.

36645540723 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

36645540723 is a deficient number, since it is larger than the sum of its proper divisors (24541553421).

36645540723 is a wasteful number, since it uses less digits than its factorization.

36645540723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 36645540723 in words is "thirty-six billion, six hundred forty-five million, five hundred forty thousand, seven hundred twenty-three".