421321662559 has 8 divisors (see below), whose sum is σ = 481532807168. Its totient is φ = 361116101880.

The previous prime is 421321662527. The next prime is 421321662581. The reversal of 421321662559 is 955266123124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421321662559 - 2⁵ = 421321662527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421321663559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233027 + ... + 1537204.

It is an arithmetic number, because the mean of its divisors is an integer number (60191600896).

Almost surely, 2^421321662559 is an apocalyptic number.

421321662559 is a deficient number, since it is larger than the sum of its proper divisors (60211144609).

421321662559 is a wasteful number, since it uses less digits than its factorization.

421321662559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791965.

The product of its digits is 777600, while the sum is 46.

The spelling of 421321662559 in words is "four hundred twenty-one billion, three hundred twenty-one million, six hundred sixty-two thousand, five hundred fifty-nine".