421754996875 has 24 divisors (see below), whose sum is σ = 528290655984. Its totient is φ = 336680340000.

The previous prime is 421754996851. The next prime is 421754996879. The reversal of 421754996875 is 578699457124.

It is a de Polignac number, because none of the positive numbers 2^k-421754996875 is a prime.

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 421754996875.

It is not an unprimeable number, because it can be changed into a prime (421754996879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1314877 + ... + 1603873.

It is an arithmetic number, because the mean of its divisors is an integer number (22012110666).

Almost surely, 2^421754996875 is an apocalyptic number.

421754996875 is a deficient number, since it is larger than the sum of its proper divisors (106535659109).

421754996875 is an frugal number, since it uses more digits than its factorization.

421754996875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289489 (or 289469 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 67.

The spelling of 421754996875 in words is "four hundred twenty-one billion, seven hundred fifty-four million, nine hundred ninety-six thousand, eight hundred seventy-five".