1627789716361 has 2 divisors, whose sum is σ = 1627789716362. Its totient is φ = 1627789716360.

The previous prime is 1627789716349. The next prime is 1627789716419. The reversal of 1627789716361 is 1636179877261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1215825996025 + 411963720336 = 1102645^2 + 641844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1627789716361 - 2³⁷ = 1490350762889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1627789716293 and 1627789716302.

It is not a weakly prime, because it can be changed into another prime (1627789716961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813894858180 + 813894858181.

It is an arithmetic number, because the mean of its divisors is an integer number (813894858181).

Almost surely, 2^{1627789716361} is an apocalyptic number.

It is an amenable number.

1627789716361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1627789716361 is an equidigital number, since it uses as much as digits as its factorization.

1627789716361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 64.

The spelling of 1627789716361 in words is "one trillion, six hundred twenty-seven billion, seven hundred eighty-nine million, seven hundred sixteen thousand, three hundred sixty-one".