531403255255020 has 48 divisors (see below), whose sum is σ = 1524220068738528. Its totient is φ = 138251253399040.

The previous prime is 531403255254973. The next prime is 531403255255049. The reversal of 531403255255020 is 20552552304135.

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, 108008789259 + ... + 108008794178.

It is an arithmetic number, because the mean of its divisors is an integer number (31754584765386).

Almost surely, 2^{531403255255020} is an apocalyptic number.

It is an amenable number.

531403255255020 is an abundant number, since it is smaller than the sum of its proper divisors (992816813483508).

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

531403255255020 is a wasteful number, since it uses less digits than its factorization.

531403255255020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216017583490 (or 216017583488 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 531403255255020 in words is "five hundred thirty-one trillion, four hundred three billion, two hundred fifty-five million, two hundred fifty-five thousand, twenty".