476043421827221 has 2 divisors, whose sum is σ = 476043421827222. Its totient is φ = 476043421827220.

The previous prime is 476043421827151. The next prime is 476043421827319. The reversal of 476043421827221 is 122728124340674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393259081839121 + 82784339988100 = 19830761^2 + 9098590^2 .

It is a cyclic number.

It is not a de Polignac number, because 476043421827221 - 2¹⁸ = 476043421565077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (476043421824221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238021710913610 + 238021710913611.

It is an arithmetic number, because the mean of its divisors is an integer number (238021710913611).

Almost surely, 2^{476043421827221} is an apocalyptic number.

It is an amenable number.

476043421827221 is a deficient number, since it is larger than the sum of its proper divisors (1).

476043421827221 is an equidigital number, since it uses as much as digits as its factorization.

476043421827221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7225344, while the sum is 53.

The spelling of 476043421827221 in words is "four hundred seventy-six trillion, forty-three billion, four hundred twenty-one million, eight hundred twenty-seven thousand, two hundred twenty-one".