421486611593 has 2 divisors, whose sum is σ = 421486611594. Its totient is φ = 421486611592.

The previous prime is 421486611571. The next prime is 421486611617. The reversal of 421486611593 is 395116684124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215345186809 + 206141424784 = 464053^2 + 454028^2 .

It is a cyclic number.

It is not a de Polignac number, because 421486611593 - 2¹⁰ = 421486610569 is a prime.

It is not a weakly prime, because it can be changed into another prime (421486641593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210743305796 + 210743305797.

It is an arithmetic number, because the mean of its divisors is an integer number (210743305797).

Almost surely, 2^421486611593 is an apocalyptic number.

It is an amenable number.

421486611593 is a deficient number, since it is larger than the sum of its proper divisors (1).

421486611593 is an equidigital number, since it uses as much as digits as its factorization.

421486611593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The spelling of 421486611593 in words is "four hundred twenty-one billion, four hundred eighty-six million, six hundred eleven thousand, five hundred ninety-three".