421898358579 has 4 divisors (see below), whose sum is σ = 562531144776. Its totient is φ = 281265572384.

The previous prime is 421898358527. The next prime is 421898358589. The reversal of 421898358579 is 975853898124.

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 421898358579 - 2⁷ = 421898358451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421898358509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70316393094 + ... + 70316393099.

It is an arithmetic number, because the mean of its divisors is an integer number (140632786194).

Almost surely, 2^421898358579 is an apocalyptic number.

421898358579 is a deficient number, since it is larger than the sum of its proper divisors (140632786197).

421898358579 is a wasteful number, since it uses less digits than its factorization.

421898358579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140632786196.

The product of its digits is 174182400, while the sum is 69.

The spelling of 421898358579 in words is "four hundred twenty-one billion, eight hundred ninety-eight million, three hundred fifty-eight thousand, five hundred seventy-nine".