36681416137 has 4 divisors (see below), whose sum is σ = 38839146516. Its totient is φ = 34523685760.

The previous prime is 36681416047. The next prime is 36681416153. The reversal of 36681416137 is 73161418663.

36681416137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 21336152761 + 15345263376 = 146069^2 + 123876^2 .

It is a cyclic number.

It is not a de Polignac number, because 36681416137 - 2²³ = 36673027529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36681416197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078865164 + ... + 1078865197.

It is an arithmetic number, because the mean of its divisors is an integer number (9709786629).

Almost surely, 2^36681416137 is an apocalyptic number.

It is an amenable number.

36681416137 is a deficient number, since it is larger than the sum of its proper divisors (2157730379).

36681416137 is a wasteful number, since it uses less digits than its factorization.

36681416137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157730378.

The product of its digits is 435456, while the sum is 46.

The spelling of 36681416137 in words is "thirty-six billion, six hundred eighty-one million, four hundred sixteen thousand, one hundred thirty-seven".