236644640797 has 2 divisors, whose sum is σ = 236644640798. Its totient is φ = 236644640796.

The previous prime is 236644640723. The next prime is 236644640803. The reversal of 236644640797 is 797046446632.

236644640797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185015257956 + 51629382841 = 430134^2 + 227221^2 .

It is a cyclic number.

It is not a de Polignac number, because 236644640797 - 2⁷ = 236644640669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236644640717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118322320398 + 118322320399.

It is an arithmetic number, because the mean of its divisors is an integer number (118322320399).

Almost surely, 2^236644640797 is an apocalyptic number.

It is an amenable number.

236644640797 is a deficient number, since it is larger than the sum of its proper divisors (1).

236644640797 is an equidigital number, since it uses as much as digits as its factorization.

236644640797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 236644640797 in words is "two hundred thirty-six billion, six hundred forty-four million, six hundred forty thousand, seven hundred ninety-seven".