421630563474 has 12 divisors (see below), whose sum is σ = 913532887566. Its totient is φ = 140543521152.

The previous prime is 421630563469. The next prime is 421630563509. The reversal of 421630563474 is 474365036124.

421630563474 is a `hidden beast` number, since 4 + 2 + 1 + 6 + 3 + 0 + 5 + 634 + 7 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 411659542449 + 9971021025 = 641607^2 + 99855^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11711960079 + ... + 11711960114.

Almost surely, 2^421630563474 is an apocalyptic number.

421630563474 is an abundant number, since it is smaller than the sum of its proper divisors (491902324092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421630563474 is a wasteful number, since it uses less digits than its factorization.

421630563474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23423920201 (or 23423920198 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

Adding to 421630563474 its reverse (474365036124), we get a palindrome (895995599598).

The spelling of 421630563474 in words is "four hundred twenty-one billion, six hundred thirty million, five hundred sixty-three thousand, four hundred seventy-four".