421881780152 has 48 divisors (see below), whose sum is σ = 920759931000. Its totient is φ = 180691705152.

The previous prime is 421881780149. The next prime is 421881780167. The reversal of 421881780152 is 251087188124.

It is a happy number.

It is a super-2 number, since 2×421881780152² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421881780097 and 421881780106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278174 + ... + 959762.

Almost surely, 2^421881780152 is an apocalyptic number.

It is an amenable number.

421881780152 is an abundant number, since it is smaller than the sum of its proper divisors (498878150848).

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

421881780152 is a wasteful number, since it uses less digits than its factorization.

421881780152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683188 (or 683177 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 47.

The spelling of 421881780152 in words is "four hundred twenty-one billion, eight hundred eighty-one million, seven hundred eighty thousand, one hundred fifty-two".