5681958387377 has 2 divisors, whose sum is σ = 5681958387378. Its totient is φ = 5681958387376.

The previous prime is 5681958387353. The next prime is 5681958387397. The reversal of 5681958387377 is 7737838591865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4094859827776 + 1587098559601 = 2023576^2 + 1259801^2 .

It is a cyclic number.

It is not a de Polignac number, because 5681958387377 - 2²⁴ = 5681941610161 is a prime.

It is a super-2 number, since 2×5681958387377² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5681958387298 and 5681958387307.

It is not a weakly prime, because it can be changed into another prime (5681958387397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840979193688 + 2840979193689.

It is an arithmetic number, because the mean of its divisors is an integer number (2840979193689).

Almost surely, 2^{5681958387377} is an apocalyptic number.

It is an amenable number.

5681958387377 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681958387377 is an equidigital number, since it uses as much as digits as its factorization.

5681958387377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2133734400, while the sum is 77.

The spelling of 5681958387377 in words is "five trillion, six hundred eighty-one billion, nine hundred fifty-eight million, three hundred eighty-seven thousand, three hundred seventy-seven".