10688394397 has 2 divisors, whose sum is σ = 10688394398. Its totient is φ = 10688394396.

The previous prime is 10688394389. The next prime is 10688394403. The reversal of 10688394397 is 79349388601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8758900921 + 1929493476 = 93589^2 + 43926^2 .

It is a cyclic number.

It is not a de Polignac number, because 10688394397 - 2³ = 10688394389 is a prime.

It is a super-2 number, since 2×10688394397² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10688394307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5344197198 + 5344197199.

It is an arithmetic number, because the mean of its divisors is an integer number (5344197199).

Almost surely, 2^10688394397 is an apocalyptic number.

It is an amenable number.

10688394397 is a deficient number, since it is larger than the sum of its proper divisors (1).

10688394397 is an equidigital number, since it uses as much as digits as its factorization.

10688394397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 10688394397 in words is "ten billion, six hundred eighty-eight million, three hundred ninety-four thousand, three hundred ninety-seven".