486556399421 has 2 divisors, whose sum is σ = 486556399422. Its totient is φ = 486556399420.

The previous prime is 486556399411. The next prime is 486556399447. The reversal of 486556399421 is 124993655684.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435666002500 + 50890396921 = 660050^2 + 225589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-486556399421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (486556399411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243278199710 + 243278199711.

It is an arithmetic number, because the mean of its divisors is an integer number (243278199711).

Almost surely, 2^486556399421 is an apocalyptic number.

It is an amenable number.

486556399421 is a deficient number, since it is larger than the sum of its proper divisors (1).

486556399421 is an equidigital number, since it uses as much as digits as its factorization.

486556399421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 62.

The spelling of 486556399421 in words is "four hundred eighty-six billion, five hundred fifty-six million, three hundred ninety-nine thousand, four hundred twenty-one".