5671780402489 has 2 divisors, whose sum is σ = 5671780402490. Its totient is φ = 5671780402488.

The previous prime is 5671780402487. The next prime is 5671780402529. The reversal of 5671780402489 is 9842040871765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5576587790400 + 95192612089 = 2361480^2 + 308533^2 .

It is a cyclic number.

It is not a de Polignac number, because 5671780402489 - 2¹ = 5671780402487 is a prime.

Together with 5671780402487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5671780402487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2835890201244 + 2835890201245.

It is an arithmetic number, because the mean of its divisors is an integer number (2835890201245).

Almost surely, 2^{5671780402489} is an apocalyptic number.

It is an amenable number.

5671780402489 is a deficient number, since it is larger than the sum of its proper divisors (1).

5671780402489 is an equidigital number, since it uses as much as digits as its factorization.

5671780402489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 5671780402489 in words is "five trillion, six hundred seventy-one billion, seven hundred eighty million, four hundred two thousand, four hundred eighty-nine".