36661286493 has 24 divisors (see below), whose sum is σ = 57038232888. Its totient is φ = 22557007872.

The previous prime is 36661286461. The next prime is 36661286521. The reversal of 36661286493 is 39468216663.

36661286493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1835008569 + 34826277924 = 42837^2 + 186618^2 .

It is not a de Polignac number, because 36661286493 - 2⁵ = 36661286461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36661286413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 779421 + ... + 825117.

It is an arithmetic number, because the mean of its divisors is an integer number (2376593037).

Almost surely, 2^36661286493 is an apocalyptic number.

It is an amenable number.

36661286493 is a deficient number, since it is larger than the sum of its proper divisors (20376946395).

36661286493 is a wasteful number, since it uses less digits than its factorization.

36661286493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52573 (or 52570 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 54.

The spelling of 36661286493 in words is "thirty-six billion, six hundred sixty-one million, two hundred eighty-six thousand, four hundred ninety-three".