7097968376557 has 2 divisors, whose sum is σ = 7097968376558. Its totient is φ = 7097968376556.

The previous prime is 7097968376533. The next prime is 7097968376573. The reversal of 7097968376557 is 7556738697907.

7097968376557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6615358897156 + 482609479401 = 2572034^2 + 694701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7097968376557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7097968376857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3548984188278 + 3548984188279.

It is an arithmetic number, because the mean of its divisors is an integer number (3548984188279).

Almost surely, 2^{7097968376557} is an apocalyptic number.

It is an amenable number.

7097968376557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7097968376557 is an equidigital number, since it uses as much as digits as its factorization.

7097968376557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200789600, while the sum is 79.

The spelling of 7097968376557 in words is "seven trillion, ninety-seven billion, nine hundred sixty-eight million, three hundred seventy-six thousand, five hundred fifty-seven".