131192782448 has 80 divisors (see below), whose sum is σ = 314764187136. Its totient is φ = 51581940480.

The previous prime is 131192782447. The next prime is 131192782489. The reversal of 131192782448 is 844287291131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131192782396 and 131192782405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131192782447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39068 + ... + 513723.

Almost surely, 2^131192782448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131192782448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157382093568).

131192782448 is an abundant number, since it is smaller than the sum of its proper divisors (183571404688).

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

131192782448 is a wasteful number, since it uses less digits than its factorization.

131192782448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552982 (or 552976 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 131192782448 in words is "one hundred thirty-one billion, one hundred ninety-two million, seven hundred eighty-two thousand, four hundred forty-eight".