28601764822201 has 2 divisors, whose sum is σ = 28601764822202. Its totient is φ = 28601764822200.

The previous prime is 28601764822151. The next prime is 28601764822243. The reversal of 28601764822201 is 10222846710682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17252816629801 + 11348948192400 = 4153651^2 + 3368820^2 .

It is a cyclic number.

It is not a de Polignac number, because 28601764822201 - 2³¹ = 28599617338553 is a prime.

It is a super-2 number, since 2×28601764822201² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28601764822271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300882411100 + 14300882411101.

It is an arithmetic number, because the mean of its divisors is an integer number (14300882411101).

Almost surely, 2^{28601764822201} is an apocalyptic number.

It is an amenable number.

28601764822201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601764822201 is an equidigital number, since it uses as much as digits as its factorization.

28601764822201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 28601764822201 in words is "twenty-eight trillion, six hundred one billion, seven hundred sixty-four million, eight hundred twenty-two thousand, two hundred one".