421797902863 has 4 divisors (see below), whose sum is σ = 421813240128. Its totient is φ = 421782565600.

The previous prime is 421797902839. The next prime is 421797902887. The reversal of 421797902863 is 368209797124.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (421797902839) and next prime (421797902887).

It is a cyclic number.

It is not a de Polignac number, because 421797902863 - 2²⁵ = 421764348431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421797902798 and 421797902807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421797902363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7627306 + ... + 7682407.

It is an arithmetic number, because the mean of its divisors is an integer number (105453310032).

Almost surely, 2^421797902863 is an apocalyptic number.

421797902863 is a deficient number, since it is larger than the sum of its proper divisors (15337265).

421797902863 is a wasteful number, since it uses less digits than its factorization.

421797902863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15337264.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 421797902863 in words is "four hundred twenty-one billion, seven hundred ninety-seven million, nine hundred two thousand, eight hundred sixty-three".