255443023420 has 36 divisors (see below), whose sum is σ = 580868373960. Its totient is φ = 94317422784.

The previous prime is 255443023391. The next prime is 255443023441. The reversal of 255443023420 is 24320344552.

It is a super-2 number, since 2×255443023420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37784050 + ... + 37790809.

It is an arithmetic number, because the mean of its divisors is an integer number (16135232610).

Almost surely, 2^255443023420 is an apocalyptic number.

255443023420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255443023420 is an abundant number, since it is smaller than the sum of its proper divisors (325425350540).

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

255443023420 is a wasteful number, since it uses less digits than its factorization.

255443023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75574894 (or 75574879 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 255443023420 its reverse (24320344552), we get a palindrome (279763367972).

The spelling of 255443023420 in words is "two hundred fifty-five billion, four hundred forty-three million, twenty-three thousand, four hundred twenty".