1129708694437 has 2 divisors, whose sum is σ = 1129708694438. Its totient is φ = 1129708694436.

The previous prime is 1129708694371. The next prime is 1129708694453. The reversal of 1129708694437 is 7344968079211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816639349761 + 313069344676 = 903681^2 + 559526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129708694437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129708694837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564854347218 + 564854347219.

It is an arithmetic number, because the mean of its divisors is an integer number (564854347219).

Almost surely, 2^{1129708694437} is an apocalyptic number.

It is an amenable number.

1129708694437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129708694437 is an equidigital number, since it uses as much as digits as its factorization.

1129708694437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 1129708694437 in words is "one trillion, one hundred twenty-nine billion, seven hundred eight million, six hundred ninety-four thousand, four hundred thirty-seven".