285640849612801 has 2 divisors, whose sum is σ = 285640849612802. Its totient is φ = 285640849612800.

The previous prime is 285640849612799. The next prime is 285640849612819. The reversal of 285640849612801 is 108216948046582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269225581529025 + 16415268083776 = 16408095^2 + 4051576^2 .

It is a cyclic number.

It is not a de Polignac number, because 285640849612801 - 2¹ = 285640849612799 is a prime.

Together with 285640849612799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (285640849612871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142820424806400 + 142820424806401.

It is an arithmetic number, because the mean of its divisors is an integer number (142820424806401).

Almost surely, 2^{285640849612801} is an apocalyptic number.

It is an amenable number.

285640849612801 is a deficient number, since it is larger than the sum of its proper divisors (1).

285640849612801 is an equidigital number, since it uses as much as digits as its factorization.

285640849612801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53084160, while the sum is 64.

The spelling of 285640849612801 in words is "two hundred eighty-five trillion, six hundred forty billion, eight hundred forty-nine million, six hundred twelve thousand, eight hundred one".