7389707159981 has 2 divisors, whose sum is σ = 7389707159982. Its totient is φ = 7389707159980.

The previous prime is 7389707159899. The next prime is 7389707160023. The reversal of 7389707159981 is 1899517079837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7380817498756 + 8889661225 = 2716766^2 + 94285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7389707159981 is a prime.

It is a super-2 number, since 2×7389707159981² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7389707159899 and 7389707159908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7389707155981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3694853579990 + 3694853579991.

It is an arithmetic number, because the mean of its divisors is an integer number (3694853579991).

Almost surely, 2^{7389707159981} is an apocalyptic number.

It is an amenable number.

7389707159981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7389707159981 is an equidigital number, since it uses as much as digits as its factorization.

7389707159981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240045120, while the sum is 74.

The spelling of 7389707159981 in words is "seven trillion, three hundred eighty-nine billion, seven hundred seven million, one hundred fifty-nine thousand, nine hundred eighty-one".