131108720640 has 208 divisors, whose sum is σ = 420530920128. Its totient is φ = 34876162048.

The previous prime is 131108720627. The next prime is 131108720641. The reversal of 131108720640 is 46027801131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131108720641) 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, 27215512 + ... + 27220328.

Almost surely, 2^131108720640 is an apocalyptic number.

131108720640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131108720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210265460064).

131108720640 is an abundant number, since it is smaller than the sum of its proper divisors (289422199488).

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

131108720640 is an equidigital number, since it uses as much as digits as its factorization.

131108720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292 (or 5270 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 131108720640 in words is "one hundred thirty-one billion, one hundred eight million, seven hundred twenty thousand, six hundred forty".