36881386865 has 16 divisors (see below), whose sum is σ = 46934231760. Its totient is φ = 27726151680.

The previous prime is 36881386859. The next prime is 36881386901. The reversal of 36881386865 is 56868318863.

It can be written as a sum of positive squares in 8 ways, for example, as 13898523664 + 22982863201 = 117892^2 + 151601^2 .

It is not a de Polignac number, because 36881386865 - 2²⁰ = 36880338289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36881386798 and 36881386807.

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 15 ways as a sum of consecutive naturals, for example, 283970 + ... + 392939.

It is an arithmetic number, because the mean of its divisors is an integer number (2933389485).

Almost surely, 2^36881386865 is an apocalyptic number.

It is an amenable number.

36881386865 is a deficient number, since it is larger than the sum of its proper divisors (10052844895).

36881386865 is a wasteful number, since it uses less digits than its factorization.

36881386865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677572.

The product of its digits is 39813120, while the sum is 62.

The spelling of 36881386865 in words is "thirty-six billion, eight hundred eighty-one million, three hundred eighty-six thousand, eight hundred sixty-five".