36616311281 has 4 divisors (see below), whose sum is σ = 39945066864. Its totient is φ = 33287555700.

The previous prime is 36616311257. The next prime is 36616311287. The reversal of 36616311281 is 18211361663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36616311281 - 2¹⁸ = 36616049137 is a prime.

It is a super-2 number, since 2×36616311281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36616311287) 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, 1664377775 + ... + 1664377796.

It is an arithmetic number, because the mean of its divisors is an integer number (9986266716).

Almost surely, 2^36616311281 is an apocalyptic number.

It is an amenable number.

36616311281 is a deficient number, since it is larger than the sum of its proper divisors (3328755583).

36616311281 is a wasteful number, since it uses less digits than its factorization.

36616311281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328755582.

The product of its digits is 31104, while the sum is 38.

The spelling of 36616311281 in words is "thirty-six billion, six hundred sixteen million, three hundred eleven thousand, two hundred eighty-one".