36836870581 has 12 divisors (see below), whose sum is σ = 43034976972. Its totient is φ = 31438938048.

The previous prime is 36836870561. The next prime is 36836870611. The reversal of 36836870581 is 18507863863.

It can be written as a sum of positive squares in 2 ways, for example, as 23233380625 + 13603489956 = 152425^2 + 116634^2 .

It is not a de Polignac number, because 36836870581 - 2¹⁵ = 36836837813 is a prime.

It is a super-3 number, since 3×36836870581³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36836870561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1601830 + ... + 1624663.

It is an arithmetic number, because the mean of its divisors is an integer number (3586248081).

Almost surely, 2^36836870581 is an apocalyptic number.

It is an amenable number.

36836870581 is a deficient number, since it is larger than the sum of its proper divisors (6198106391).

36836870581 is a wasteful number, since it uses less digits than its factorization.

36836870581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226740 (or 3226733 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 36836870581 in words is "thirty-six billion, eight hundred thirty-six million, eight hundred seventy thousand, five hundred eighty-one".