28371696757 has 2 divisors, whose sum is σ = 28371696758. Its totient is φ = 28371696756.

The previous prime is 28371696719. The next prime is 28371696767. The reversal of 28371696757 is 75769617382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28371696721 + 36 = 168439^2 + 6^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28371696757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28371696695 and 28371696704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28371696767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14185848378 + 14185848379.

It is an arithmetic number, because the mean of its divisors is an integer number (14185848379).

Almost surely, 2^28371696757 is an apocalyptic number.

It is an amenable number.

28371696757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28371696757 is an equidigital number, since it uses as much as digits as its factorization.

28371696757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26671680, while the sum is 61.

The spelling of 28371696757 in words is "twenty-eight billion, three hundred seventy-one million, six hundred ninety-six thousand, seven hundred fifty-seven".