131706736565 has 8 divisors (see below), whose sum is σ = 158242969248. Its totient is φ = 105235465680.

The previous prime is 131706736543. The next prime is 131706736621. The reversal of 131706736565 is 565637607131.

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

It is not a de Polignac number, because 131706736565 - 2¹⁸ = 131706474421 is a prime.

It is a Duffinian number.

It is a congruent 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, 16235987 + ... + 16244096.

It is an arithmetic number, because the mean of its divisors is an integer number (19780371156).

Almost surely, 2^131706736565 is an apocalyptic number.

It is an amenable number.

131706736565 is a deficient number, since it is larger than the sum of its proper divisors (26536232683).

131706736565 is an equidigital number, since it uses as much as digits as its factorization.

131706736565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32480899.

The product of its (nonzero) digits is 2381400, while the sum is 50.

The spelling of 131706736565 in words is "one hundred thirty-one billion, seven hundred six million, seven hundred thirty-six thousand, five hundred sixty-five".