421718688392 has 32 divisors (see below), whose sum is σ = 791427214080. Its totient is φ = 210671529600.

The previous prime is 421718688343. The next prime is 421718688451. The reversal of 421718688392 is 293886817124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78808517 + ... + 78813867.

It is an arithmetic number, because the mean of its divisors is an integer number (24732100440).

Almost surely, 2^421718688392 is an apocalyptic number.

It is an amenable number.

421718688392 is a deficient number, since it is larger than the sum of its proper divisors (369708525688).

421718688392 is a wasteful number, since it uses less digits than its factorization.

421718688392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293 (or 12289 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 59.

The spelling of 421718688392 in words is "four hundred twenty-one billion, seven hundred eighteen million, six hundred eighty-eight thousand, three hundred ninety-two".