131680378490 has 8 divisors (see below), whose sum is σ = 237024681300. Its totient is φ = 52672151392.

The previous prime is 131680378477. The next prime is 131680378493. The reversal of 131680378490 is 94873086131.

It can be written as a sum of positive squares in 2 ways, for example, as 131611505089 + 68873401 = 362783^2 + 8299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131680378493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6584018915 + ... + 6584018934.

Almost surely, 2^131680378490 is an apocalyptic number.

131680378490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131680378490 is a deficient number, since it is larger than the sum of its proper divisors (105344302810).

131680378490 is a wasteful number, since it uses less digits than its factorization.

131680378490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168037856.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 131680378490 in words is "one hundred thirty-one billion, six hundred eighty million, three hundred seventy-eight thousand, four hundred ninety".