131665547202280 has 576 divisors, whose sum is σ = 379789589879280. Its totient is φ = 40931780198400.

The previous prime is 131665547202253. The next prime is 131665547202281. The reversal of 131665547202280 is 82202745566131.

It can be written as a sum of positive squares in 24 ways, for example, as 34063121395044 + 97602425807236 = 5836362^2 + 9879394^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (131665547202281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 16588826472 + ... + 16588834408.

Almost surely, 2^{131665547202280} is an apocalyptic number.

131665547202280 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 131665547202280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189894794939640).

131665547202280 is an abundant number, since it is smaller than the sum of its proper divisors (248124042677000).

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

131665547202280 is a wasteful number, since it uses less digits than its factorization.

131665547202280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870 (or 8846 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 131665547202280 in words is "one hundred thirty-one trillion, six hundred sixty-five billion, five hundred forty-seven million, two hundred two thousand, two hundred eighty".