421685196311 has 2 divisors, whose sum is σ = 421685196312. Its totient is φ = 421685196310.

The previous prime is 421685196271. The next prime is 421685196341. The reversal of 421685196311 is 113691586124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421685196311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421685196341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210842598155 + 210842598156.

It is an arithmetic number, because the mean of its divisors is an integer number (210842598156).

Almost surely, 2^421685196311 is an apocalyptic number.

421685196311 is a deficient number, since it is larger than the sum of its proper divisors (1).

421685196311 is an equidigital number, since it uses as much as digits as its factorization.

421685196311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The spelling of 421685196311 in words is "four hundred twenty-one billion, six hundred eighty-five million, one hundred ninety-six thousand, three hundred eleven".