131641604245 has 4 divisors (see below), whose sum is σ = 157969925100. Its totient is φ = 105313283392.

The previous prime is 131641604233. The next prime is 131641604267. The reversal of 131641604245 is 542406146131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25536359601 + 106105244644 = 159801^2 + 325738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131641604245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13164160420 + ... + 13164160429.

It is an arithmetic number, because the mean of its divisors is an integer number (39492481275).

Almost surely, 2^131641604245 is an apocalyptic number.

It is an amenable number.

131641604245 is a deficient number, since it is larger than the sum of its proper divisors (26328320855).

131641604245 is an equidigital number, since it uses as much as digits as its factorization.

131641604245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26328320854.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 131641604245 in words is "one hundred thirty-one billion, six hundred forty-one million, six hundred four thousand, two hundred forty-five".