131816461445 has 16 divisors (see below), whose sum is σ = 162059350320. Its totient is φ = 102867456000.

The previous prime is 131816461421. The next prime is 131816461457. The reversal of 131816461445 is 544164618131.

It can be written as a sum of positive squares in 8 ways, for example, as 75681110404 + 56135351041 = 275102^2 + 236929^2 .

It is not a de Polignac number, because 131816461445 - 2²⁸ = 131548025989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131816461396 and 131816461405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668845 + ... + 1746045.

It is an arithmetic number, because the mean of its divisors is an integer number (10128709395).

Almost surely, 2^131816461445 is an apocalyptic number.

It is an amenable number.

131816461445 is a deficient number, since it is larger than the sum of its proper divisors (30242888875).

131816461445 is an equidigital number, since it uses as much as digits as its factorization.

131816461445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85576.

The product of its digits is 276480, while the sum is 44.

The spelling of 131816461445 in words is "one hundred thirty-one billion, eight hundred sixteen million, four hundred sixty-one thousand, four hundred forty-five".