36061819581 has 16 divisors (see below), whose sum is σ = 49217946624. Its totient is φ = 23473846704.

The previous prime is 36061819523. The next prime is 36061819597. The reversal of 36061819581 is 18591816063.

It is not a de Polignac number, because 36061819581 - 2⁹ = 36061819069 is a prime.

It is a super-2 number, since 2×36061819581² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 36061819581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36061819081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329830 + ... + 425336.

It is an arithmetic number, because the mean of its divisors is an integer number (3076121664).

Almost surely, 2^36061819581 is an apocalyptic number.

It is an amenable number.

36061819581 is a deficient number, since it is larger than the sum of its proper divisors (13156127043).

36061819581 is a wasteful number, since it uses less digits than its factorization.

36061819581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98480.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 36061819581 in words is "thirty-six billion, sixty-one million, eight hundred nineteen thousand, five hundred eighty-one".