421036564451 has 2 divisors, whose sum is σ = 421036564452. Its totient is φ = 421036564450.

The previous prime is 421036564433. The next prime is 421036564457. The reversal of 421036564451 is 154465630124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421036564451 - 2¹⁰ = 421036563427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421036564399 and 421036564408.

It is not a weakly prime, because it can be changed into another prime (421036564457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210518282225 + 210518282226.

It is an arithmetic number, because the mean of its divisors is an integer number (210518282226).

Almost surely, 2^421036564451 is an apocalyptic number.

421036564451 is a deficient number, since it is larger than the sum of its proper divisors (1).

421036564451 is an equidigital number, since it uses as much as digits as its factorization.

421036564451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 421036564451 in words is "four hundred twenty-one billion, thirty-six million, five hundred sixty-four thousand, four hundred fifty-one".