36689645457 has 6 divisors (see below), whose sum is σ = 52996154562. Its totient is φ = 24459763632.

The previous prime is 36689645453. The next prime is 36689645491. The reversal of 36689645457 is 75454698663.

36689645457 is a `hidden beast` number, since 3 + 6 + 6 + 89 + 6 + 4 + 545 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36345134736 + 344510721 = 190644^2 + 18561^2 .

It is not a de Polignac number, because 36689645457 - 2² = 36689645453 is a prime.

It is a super-2 number, since 2×36689645457² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36689645394 and 36689645403.

It is not an unprimeable number, because it can be changed into a prime (36689645453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2038313628 + ... + 2038313645.

It is an arithmetic number, because the mean of its divisors is an integer number (8832692427).

Almost surely, 2^36689645457 is an apocalyptic number.

It is an amenable number.

36689645457 is a deficient number, since it is larger than the sum of its proper divisors (16306509105).

36689645457 is a wasteful number, since it uses less digits than its factorization.

36689645457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076627279 (or 4076627276 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 63.

The spelling of 36689645457 in words is "thirty-six billion, six hundred eighty-nine million, six hundred forty-five thousand, four hundred fifty-seven".