36781740091 has 2 divisors, whose sum is σ = 36781740092. Its totient is φ = 36781740090.

The previous prime is 36781740077. The next prime is 36781740169. The reversal of 36781740091 is 19004718763.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36781740091 - 2¹¹ = 36781738043 is a prime.

It is not a weakly prime, because it can be changed into another prime (36781740031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18390870045 + 18390870046.

It is an arithmetic number, because the mean of its divisors is an integer number (18390870046).

Almost surely, 2^36781740091 is an apocalyptic number.

36781740091 is a deficient number, since it is larger than the sum of its proper divisors (1).

36781740091 is an equidigital number, since it uses as much as digits as its factorization.

36781740091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 36781740091 in words is "thirty-six billion, seven hundred eighty-one million, seven hundred forty thousand, ninety-one".