421753583752 has 16 divisors (see below), whose sum is σ = 790806260160. Its totient is φ = 210871914384.

The previous prime is 421753583747. The next prime is 421753583753. The reversal of 421753583752 is 257385357124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421753583752.

It is not an unprimeable number, because it can be changed into a prime (421753583753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228148 + ... + 946339.

It is an arithmetic number, because the mean of its divisors is an integer number (49425391260).

Almost surely, 2^421753583752 is an apocalyptic number.

It is an amenable number.

421753583752 is a deficient number, since it is larger than the sum of its proper divisors (369052676408).

421753583752 is a wasteful number, since it uses less digits than its factorization.

421753583752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219380 (or 1219376 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 52.

The spelling of 421753583752 in words is "four hundred twenty-one billion, seven hundred fifty-three million, five hundred eighty-three thousand, seven hundred fifty-two".