36445087891 has 2 divisors, whose sum is σ = 36445087892. Its totient is φ = 36445087890.

The previous prime is 36445087879. The next prime is 36445087919. The reversal of 36445087891 is 19878054463.

36445087891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36445087891 - 2²³ = 36436699283 is a prime.

It is not a weakly prime, because it can be changed into another prime (36445087831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18222543945 + 18222543946.

It is an arithmetic number, because the mean of its divisors is an integer number (18222543946).

Almost surely, 2^36445087891 is an apocalyptic number.

36445087891 is a deficient number, since it is larger than the sum of its proper divisors (1).

36445087891 is an equidigital number, since it uses as much as digits as its factorization.

36445087891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 36445087891 in words is "thirty-six billion, four hundred forty-five million, eighty-seven thousand, eight hundred ninety-one".