421228802636 has 12 divisors (see below), whose sum is σ = 737155044360. Its totient is φ = 210613075680.

The previous prime is 421228802611. The next prime is 421228802653. The reversal of 421228802636 is 636208822124.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857216 + ... + 1255896.

It is an arithmetic number, because the mean of its divisors is an integer number (61429587030).

Almost surely, 2^421228802636 is an apocalyptic number.

It is an amenable number.

421228802636 is a deficient number, since it is larger than the sum of its proper divisors (315926241724).

421228802636 is a wasteful number, since it uses less digits than its factorization.

421228802636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662824 (or 662822 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 421228802636 in words is "four hundred twenty-one billion, two hundred twenty-eight million, eight hundred two thousand, six hundred thirty-six".