131720554543 has 2 divisors, whose sum is σ = 131720554544. Its totient is φ = 131720554542.

The previous prime is 131720554507. The next prime is 131720554561. The reversal of 131720554543 is 345455027131.

It is a strong prime.

It is an emirp because it is prime and its reverse (345455027131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131720554543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131720554496 and 131720554505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131720554243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65860277271 + 65860277272.

It is an arithmetic number, because the mean of its divisors is an integer number (65860277272).

Almost surely, 2^131720554543 is an apocalyptic number.

131720554543 is a deficient number, since it is larger than the sum of its proper divisors (1).

131720554543 is an equidigital number, since it uses as much as digits as its factorization.

131720554543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 131720554543 in words is "one hundred thirty-one billion, seven hundred twenty million, five hundred fifty-four thousand, five hundred forty-three".