1708377641381 has 2 divisors, whose sum is σ = 1708377641382. Its totient is φ = 1708377641380.

The previous prime is 1708377641279. The next prime is 1708377641393. The reversal of 1708377641381 is 1831467738071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 897252250756 + 811125390625 = 947234^2 + 900625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1708377641381 - 2¹⁰ = 1708377640357 is a prime.

It is a super-2 number, since 2×1708377641381² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1708377641081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 854188820690 + 854188820691.

It is an arithmetic number, because the mean of its divisors is an integer number (854188820691).

Almost surely, 2^{1708377641381} is an apocalyptic number.

It is an amenable number.

1708377641381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1708377641381 is an equidigital number, since it uses as much as digits as its factorization.

1708377641381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4741632, while the sum is 56.

The spelling of 1708377641381 in words is "one trillion, seven hundred eight billion, three hundred seventy-seven million, six hundred forty-one thousand, three hundred eighty-one".