131641645819 has 2 divisors, whose sum is σ = 131641645820. Its totient is φ = 131641645818.

The previous prime is 131641645801. The next prime is 131641645847. The reversal of 131641645819 is 918546146131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131641645819 - 2⁷ = 131641645691 is a prime.

It is a super-2 number, since 2×131641645819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131641645879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65820822909 + 65820822910.

It is an arithmetic number, because the mean of its divisors is an integer number (65820822910).

Almost surely, 2^131641645819 is an apocalyptic number.

131641645819 is a deficient number, since it is larger than the sum of its proper divisors (1).

131641645819 is an equidigital number, since it uses as much as digits as its factorization.

131641645819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 131641645819 in words is "one hundred thirty-one billion, six hundred forty-one million, six hundred forty-five thousand, eight hundred nineteen".