131642534644 has 12 divisors (see below), whose sum is σ = 230383932100. Its totient is φ = 65818554048.

The previous prime is 131642534629. The next prime is 131642534719. The reversal of 131642534644 is 446435246131.

It can be written as a sum of positive squares in 2 ways, for example, as 50889945744 + 80752588900 = 225588^2 + 284170^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131642534644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567129 + ... + 764800.

Almost surely, 2^131642534644 is an apocalyptic number.

It is an amenable number.

131642534644 is a deficient number, since it is larger than the sum of its proper divisors (98741397456).

131642534644 is a wasteful number, since it uses less digits than its factorization.

131642534644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356642 (or 1356640 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The spelling of 131642534644 in words is "one hundred thirty-one billion, six hundred forty-two million, five hundred thirty-four thousand, six hundred forty-four".