131145402544 has 40 divisors (see below), whose sum is σ = 275637358080. Its totient is φ = 60086819328.

The previous prime is 131145402517. The next prime is 131145402581. The reversal of 131145402544 is 445204541131.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2272624 + ... + 2329615.

It is an arithmetic number, because the mean of its divisors is an integer number (6890933952).

Almost surely, 2^131145402544 is an apocalyptic number.

It is an amenable number.

131145402544 is an abundant number, since it is smaller than the sum of its proper divisors (144491955536).

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

131145402544 is a wasteful number, since it uses less digits than its factorization.

131145402544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602397 (or 4602391 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 131145402544 its reverse (445204541131), we get a palindrome (576349943675).

The spelling of 131145402544 in words is "one hundred thirty-one billion, one hundred forty-five million, four hundred two thousand, five hundred forty-four".