1371617297543 has 2 divisors, whose sum is σ = 1371617297544. Its totient is φ = 1371617297542.

The previous prime is 1371617297513. The next prime is 1371617297563. The reversal of 1371617297543 is 3457927161731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1371617297543 - 2²² = 1371613103239 is a prime.

It is a super-3 number, since 3×1371617297543³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371617297513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685808648771 + 685808648772.

It is an arithmetic number, because the mean of its divisors is an integer number (685808648772).

Almost surely, 2^{1371617297543} is an apocalyptic number.

1371617297543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371617297543 is an equidigital number, since it uses as much as digits as its factorization.

1371617297543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920, while the sum is 56.

The spelling of 1371617297543 in words is "one trillion, three hundred seventy-one billion, six hundred seventeen million, two hundred ninety-seven thousand, five hundred forty-three".