36240720786 has 80 divisors (see below), whose sum is σ = 81993859200. Its totient is φ = 11963544480.

The previous prime is 36240720781. The next prime is 36240720809. The reversal of 36240720786 is 68702704263.

36240720786 is a `hidden beast` number, since 36 + 2 + 407 + 207 + 8 + 6 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36240720781) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8856601 + ... + 8860691.

It is an arithmetic number, because the mean of its divisors is an integer number (1024923240).

Almost surely, 2^36240720786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36240720786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40996929600).

36240720786 is an abundant number, since it is smaller than the sum of its proper divisors (45753138414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36240720786 is a wasteful number, since it uses less digits than its factorization.

36240720786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621 (or 4612 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 36240720786 in words is "thirty-six billion, two hundred forty million, seven hundred twenty thousand, seven hundred eighty-six".