421986618992 has 30 divisors (see below), whose sum is σ = 853172054952. Its totient is φ = 201813727456.

The previous prime is 421986618983. The next prime is 421986619057. The reversal of 421986618992 is 299816689124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12444653 + ... + 12478515.

Almost surely, 2^421986618992 is an apocalyptic number.

It is an amenable number.

421986618992 is an abundant number, since it is smaller than the sum of its proper divisors (431185435960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421986618992 is an frugal number, since it uses more digits than its factorization.

421986618992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67757 (or 33888 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 65.

The spelling of 421986618992 in words is "four hundred twenty-one billion, nine hundred eighty-six million, six hundred eighteen thousand, nine hundred ninety-two".