421443277564 has 12 divisors (see below), whose sum is σ = 737534335888. Its totient is φ = 210719181600.

The previous prime is 421443277553. The next prime is 421443277579. The reversal of 421443277564 is 465772344124.

It is a super-2 number, since 2×421443277564² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 196872 + ... + 938959.

Almost surely, 2^421443277564 is an apocalyptic number.

It is an amenable number.

421443277564 is a deficient number, since it is larger than the sum of its proper divisors (316091058324).

421443277564 is a wasteful number, since it uses less digits than its factorization.

421443277564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228596 (or 1228594 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 49.

The spelling of 421443277564 in words is "four hundred twenty-one billion, four hundred forty-three million, two hundred seventy-seven thousand, five hundred sixty-four".