131798361648 has 40 divisors (see below), whose sum is σ = 340528602096. Its totient is φ = 43926400000.

The previous prime is 131798361637. The next prime is 131798361661. The reversal of 131798361648 is 846163897131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139948 + ... + 532148.

Almost surely, 2^131798361648 is an apocalyptic number.

It is an amenable number.

131798361648 is an abundant number, since it is smaller than the sum of its proper divisors (208730240448).

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

131798361648 is a wasteful number, since it uses less digits than its factorization.

131798361648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399213 (or 399207 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 57.

The spelling of 131798361648 in words is "one hundred thirty-one billion, seven hundred ninety-eight million, three hundred sixty-one thousand, six hundred forty-eight".