421966973631 has 16 divisors (see below), whose sum is σ = 653538234368. Its totient is φ = 237171132000.

The previous prime is 421966973551. The next prime is 421966973633. The reversal of 421966973631 is 136379669124.

It is not a de Polignac number, because 421966973631 - 2⁷ = 421966973503 is a prime.

It is a super-2 number, since 2×421966973631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421966973633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164700895 + ... + 164703456.

It is an arithmetic number, because the mean of its divisors is an integer number (40846139648).

Almost surely, 2^421966973631 is an apocalyptic number.

421966973631 is a deficient number, since it is larger than the sum of its proper divisors (231571260737).

421966973631 is a wasteful number, since it uses less digits than its factorization.

421966973631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329404422.

The product of its digits is 8817984, while the sum is 57.

The spelling of 421966973631 in words is "four hundred twenty-one billion, nine hundred sixty-six million, nine hundred seventy-three thousand, six hundred thirty-one".