36698684359681 has 4 divisors (see below), whose sum is σ = 36698703531732. Its totient is φ = 36698665187632.

The previous prime is 36698684359643. The next prime is 36698684359741. The reversal of 36698684359681 is 18695348689663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18203739029056 + 18494945330625 = 4266584^2 + 4300575^2 .

It is a cyclic number.

It is not a de Polignac number, because 36698684359681 - 2²⁵ = 36698650805249 is a prime.

It is a super-2 number, since 2×36698684359681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36698684359595 and 36698684359604.

It is not an unprimeable number, because it can be changed into a prime (36698684359781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6350806 + ... + 10664431.

It is an arithmetic number, because the mean of its divisors is an integer number (9174675882933).

Almost surely, 2^{36698684359681} is an apocalyptic number.

It is an amenable number.

36698684359681 is a deficient number, since it is larger than the sum of its proper divisors (19172051).

36698684359681 is a wasteful number, since it uses less digits than its factorization.

36698684359681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19172050.

The product of its digits is 9674588160, while the sum is 82.

The spelling of 36698684359681 in words is "thirty-six trillion, six hundred ninety-eight billion, six hundred eighty-four million, three hundred fifty-nine thousand, six hundred eighty-one".