421426327607 has 4 divisors (see below), whose sum is σ = 439749211440. Its totient is φ = 403103443776.

The previous prime is 421426327583. The next prime is 421426327649. The reversal of 421426327607 is 706723624124.

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 421426327607 - 2¹⁰ = 421426326583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421426327697) 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, 9161441882 + ... + 9161441927.

It is an arithmetic number, because the mean of its divisors is an integer number (109937302860).

Almost surely, 2^421426327607 is an apocalyptic number.

421426327607 is a deficient number, since it is larger than the sum of its proper divisors (18322883833).

421426327607 is a wasteful number, since it uses less digits than its factorization.

421426327607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18322883832.

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 421426327607 in words is "four hundred twenty-one billion, four hundred twenty-six million, three hundred twenty-seven thousand, six hundred seven".