421315832643 has 4 divisors (see below), whose sum is σ = 561754443528. Its totient is φ = 280877221760.

The previous prime is 421315832629. The next prime is 421315832647. The reversal of 421315832643 is 346238513124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421315832643 - 2³⁷ = 283876879171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421315832595 and 421315832604.

It is not an unprimeable number, because it can be changed into a prime (421315832647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70219305438 + ... + 70219305443.

It is an arithmetic number, because the mean of its divisors is an integer number (140438610882).

Almost surely, 2^421315832643 is an apocalyptic number.

421315832643 is a deficient number, since it is larger than the sum of its proper divisors (140438610885).

421315832643 is a wasteful number, since it uses less digits than its factorization.

421315832643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140438610884.

The product of its digits is 414720, while the sum is 42.

The spelling of 421315832643 in words is "four hundred twenty-one billion, three hundred fifteen million, eight hundred thirty-two thousand, six hundred forty-three".