421758416719 has 8 divisors (see below), whose sum is σ = 430779834000. Its totient is φ = 412799431872.

The previous prime is 421758416713. The next prime is 421758416731. The reversal of 421758416719 is 917614857124.

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 421758416719 - 2⁹ = 421758416207 is a prime.

It is a super-2 number, since 2×421758416719² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421758416719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421758416713) 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, 15594454 + ... + 15621475.

It is an arithmetic number, because the mean of its divisors is an integer number (53847479250).

Almost surely, 2^421758416719 is an apocalyptic number.

421758416719 is a deficient number, since it is larger than the sum of its proper divisors (9021417281).

421758416719 is a wasteful number, since it uses less digits than its factorization.

421758416719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31216217.

The product of its digits is 3386880, while the sum is 55.

The spelling of 421758416719 in words is "four hundred twenty-one billion, seven hundred fifty-eight million, four hundred sixteen thousand, seven hundred nineteen".