421634263466 has 64 divisors (see below), whose sum is σ = 734240505600. Its totient is φ = 179843189760.

The previous prime is 421634263429. The next prime is 421634263529. The reversal of 421634263466 is 664362436124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421634263466.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16137185 + ... + 16163291.

It is an arithmetic number, because the mean of its divisors is an integer number (11472507900).

Almost surely, 2^421634263466 is an apocalyptic number.

421634263466 is a deficient number, since it is larger than the sum of its proper divisors (312606242134).

421634263466 is a wasteful number, since it uses less digits than its factorization.

421634263466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26799.

The product of its digits is 2985984, while the sum is 47.

The spelling of 421634263466 in words is "four hundred twenty-one billion, six hundred thirty-four million, two hundred sixty-three thousand, four hundred sixty-six".