531155643275642 has 48 divisors (see below), whose sum is σ = 1011755407357440. Its totient is φ = 206803074139200.

The previous prime is 531155643275627. The next prime is 531155643275693. The reversal of 531155643275642 is 246572346551135.

It is a super-2 number, since 2×531155643275642² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165893267 + ... + 169064742.

It is an arithmetic number, because the mean of its divisors is an integer number (21078237653280).

Almost surely, 2^{531155643275642} is an apocalyptic number.

531155643275642 is a deficient number, since it is larger than the sum of its proper divisors (480599764081798).

531155643275642 is a wasteful number, since it uses less digits than its factorization.

531155643275642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334959507 (or 334959500 counting only the distinct ones).

The product of its digits is 90720000, while the sum is 59.

The spelling of 531155643275642 in words is "five hundred thirty-one trillion, one hundred fifty-five billion, six hundred forty-three million, two hundred seventy-five thousand, six hundred forty-two".