131861737163 has 4 divisors (see below), whose sum is σ = 142004947728. Its totient is φ = 121718526600.

The previous prime is 131861737153. The next prime is 131861737169. The reversal of 131861737163 is 361737168131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361737168131 = 116293 ⋅3110567.

It is a cyclic number.

It is not a de Polignac number, because 131861737163 - 2⁶ = 131861737099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131861737169) 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, 5071605263 + ... + 5071605288.

It is an arithmetic number, because the mean of its divisors is an integer number (35501236932).

Almost surely, 2^131861737163 is an apocalyptic number.

131861737163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131861737163 is a deficient number, since it is larger than the sum of its proper divisors (10143210565).

131861737163 is a wasteful number, since it uses less digits than its factorization.

131861737163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143210564.

The product of its digits is 381024, while the sum is 47.

The spelling of 131861737163 in words is "one hundred thirty-one billion, eight hundred sixty-one million, seven hundred thirty-seven thousand, one hundred sixty-three".