7957880937397 has 2 divisors, whose sum is σ = 7957880937398. Its totient is φ = 7957880937396.

The previous prime is 7957880937337. The next prime is 7957880937407. The reversal of 7957880937397 is 7937390887597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7842721836196 + 115159101201 = 2800486^2 + 339351^2 .

It is a cyclic number.

It is not a de Polignac number, because 7957880937397 - 2¹¹ = 7957880935349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7957880937397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7957880937337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3978940468698 + 3978940468699.

It is an arithmetic number, because the mean of its divisors is an integer number (3978940468699).

Almost surely, 2^{7957880937397} is an apocalyptic number.

It is an amenable number.

7957880937397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7957880937397 is an equidigital number, since it uses as much as digits as its factorization.

7957880937397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040947520, while the sum is 82.

The spelling of 7957880937397 in words is "seven trillion, nine hundred fifty-seven billion, eight hundred eighty million, nine hundred thirty-seven thousand, three hundred ninety-seven".