36866853517 has 4 divisors (see below), whose sum is σ = 39702765340. Its totient is φ = 34030941696.

The previous prime is 36866853473. The next prime is 36866853523. The reversal of 36866853517 is 71535866863.

36866853517 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, and also an emirpimes, since its reverse is a distinct semiprime: 71535866863 = 23 ⋅3110255081.

It can be written as a sum of positive squares in 2 ways, for example, as 3358086601 + 33508766916 = 57949^2 + 183054^2 .

It is a cyclic number.

It is not a de Polignac number, because 36866853517 - 2²⁷ = 36732635789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36866853217) 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, 1417955892 + ... + 1417955917.

It is an arithmetic number, because the mean of its divisors is an integer number (9925691335).

Almost surely, 2^36866853517 is an apocalyptic number.

It is an amenable number.

36866853517 is a deficient number, since it is larger than the sum of its proper divisors (2835911823).

36866853517 is a wasteful number, since it uses less digits than its factorization.

36866853517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835911822.

The product of its digits is 21772800, while the sum is 58.

The spelling of 36866853517 in words is "thirty-six billion, eight hundred sixty-six million, eight hundred fifty-three thousand, five hundred seventeen".