255543345552 has 80 divisors (see below), whose sum is σ = 720874486080. Its totient is φ = 77361369600.

The previous prime is 255543345523. The next prime is 255543345581.

It is a happy number.

255543345552 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (255543345523) and next prime (255543345581).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302074 + ... + 776102.

It is an arithmetic number, because the mean of its divisors is an integer number (9010931076).

Almost surely, 2^255543345552 is an apocalyptic number.

255543345552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255543345552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360437243040).

255543345552 is an abundant number, since it is smaller than the sum of its proper divisors (465331140528).

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

255543345552 is a wasteful number, since it uses less digits than its factorization.

255543345552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475072 (or 475066 counting only the distinct ones).

The product of its digits is 9000000, while the sum is 48.

The spelling of 255543345552 in words is "two hundred fifty-five billion, five hundred forty-three million, three hundred forty-five thousand, five hundred fifty-two".