423213312133520 has 40 divisors (see below), whose sum is σ = 997829696508480. Its totient is φ = 166901024501120.

The previous prime is 423213312133511. The next prime is 423213312133537. The reversal of 423213312133520 is 25331213312324.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37254687290 + ... + 37254698649.

It is an arithmetic number, because the mean of its divisors is an integer number (24945742412712).

Almost surely, 2^{423213312133520} is an apocalyptic number.

423213312133520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423213312133520 is an abundant number, since it is smaller than the sum of its proper divisors (574616384374960).

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

423213312133520 is a wasteful number, since it uses less digits than its factorization.

423213312133520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74509386023 (or 74509386017 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 423213312133520 its reverse (25331213312324), we get a palindrome (448544525445844).

The spelling of 423213312133520 in words is "four hundred twenty-three trillion, two hundred thirteen billion, three hundred twelve million, one hundred thirty-three thousand, five hundred twenty".