36781338287 has 4 divisors (see below), whose sum is σ = 36785516856. Its totient is φ = 36777159720.

The previous prime is 36781338281. The next prime is 36781338311. The reversal of 36781338287 is 78283318763.

36781338287 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.

It is a cyclic number.

It is not a de Polignac number, because 36781338287 - 2¹⁴ = 36781321903 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 (36781338281) 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, 2076053 + ... + 2093694.

It is an arithmetic number, because the mean of its divisors is an integer number (9196379214).

Almost surely, 2^36781338287 is an apocalyptic number.

36781338287 is a deficient number, since it is larger than the sum of its proper divisors (4178569).

36781338287 is an equidigital number, since it uses as much as digits as its factorization.

36781338287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178568.

The product of its digits is 8128512, while the sum is 56.

The spelling of 36781338287 in words is "thirty-six billion, seven hundred eighty-one million, three hundred thirty-eight thousand, two hundred eighty-seven".