421078632097 has 2 divisors, whose sum is σ = 421078632098. Its totient is φ = 421078632096.

The previous prime is 421078632043. The next prime is 421078632109. The reversal of 421078632097 is 790236870124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276671792016 + 144406840081 = 525996^2 + 380009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421078632097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421078632097.

It is not a weakly prime, because it can be changed into another prime (421078633097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210539316048 + 210539316049.

It is an arithmetic number, because the mean of its divisors is an integer number (210539316049).

Almost surely, 2^421078632097 is an apocalyptic number.

It is an amenable number.

421078632097 is a deficient number, since it is larger than the sum of its proper divisors (1).

421078632097 is an equidigital number, since it uses as much as digits as its factorization.

421078632097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 421078632097 in words is "four hundred twenty-one billion, seventy-eight million, six hundred thirty-two thousand, ninety-seven".