3917304539881 has 2 divisors, whose sum is σ = 3917304539882. Its totient is φ = 3917304539880.

The previous prime is 3917304539879. The next prime is 3917304539927. The reversal of 3917304539881 is 1889354037193.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3011904714256 + 905399825625 = 1735484^2 + 951525^2 .

It is a cyclic number.

It is not a de Polignac number, because 3917304539881 - 2¹ = 3917304539879 is a prime.

It is a super-2 number, since 2×3917304539881² (a number of 26 digits) contains 22 as substring.

Together with 3917304539879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3917304549881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1958652269940 + 1958652269941.

It is an arithmetic number, because the mean of its divisors is an integer number (1958652269941).

Almost surely, 2^{3917304539881} is an apocalyptic number.

It is an amenable number.

3917304539881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3917304539881 is an equidigital number, since it uses as much as digits as its factorization.

3917304539881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 3917304539881 in words is "three trillion, nine hundred seventeen billion, three hundred four million, five hundred thirty-nine thousand, eight hundred eighty-one".