131444577436 has 12 divisors (see below), whose sum is σ = 230097760200. Its totient is φ = 65702360240.

The previous prime is 131444577413. The next prime is 131444577461. The reversal of 131444577436 is 634775444131.

It is a self number, because there is not a number n which added to its sum of digits gives 131444577436.

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, 4967275 + ... + 4993666.

It is an arithmetic number, because the mean of its divisors is an integer number (19174813350).

Almost surely, 2^131444577436 is an apocalyptic number.

It is an amenable number.

131444577436 is a deficient number, since it is larger than the sum of its proper divisors (98653182764).

131444577436 is a wasteful number, since it uses less digits than its factorization.

131444577436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964244 (or 9964242 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 49.

The spelling of 131444577436 in words is "one hundred thirty-one billion, four hundred forty-four million, five hundred seventy-seven thousand, four hundred thirty-six".