36535856981 has 8 divisors (see below), whose sum is σ = 39348798720. Its totient is φ = 33723271152.

The previous prime is 36535856963. The next prime is 36535856989. The reversal of 36535856981 is 18965853563.

36535856981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36535856981 is a prime.

It is a super-2 number, since 2×36535856981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36535856981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36535856989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147536 + ... + 307958.

It is an arithmetic number, because the mean of its divisors is an integer number (4918599840).

Almost surely, 2^36535856981 is an apocalyptic number.

It is an amenable number.

36535856981 is a deficient number, since it is larger than the sum of its proper divisors (2812941739).

36535856981 is a wasteful number, since it uses less digits than its factorization.

36535856981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177955.

The product of its digits is 23328000, while the sum is 59.

The spelling of 36535856981 in words is "thirty-six billion, five hundred thirty-five million, eight hundred fifty-six thousand, nine hundred eighty-one".