28691152719941 has 2 divisors, whose sum is σ = 28691152719942. Its totient is φ = 28691152719940.

The previous prime is 28691152719913. The next prime is 28691152719959. The reversal of 28691152719941 is 14991725119682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22586769522916 + 6104383197025 = 4752554^2 + 2470705^2 .

It is a cyclic number.

It is not a de Polignac number, because 28691152719941 - 2³⁸ = 28416274812997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28691152119941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14345576359970 + 14345576359971.

It is an arithmetic number, because the mean of its divisors is an integer number (14345576359971).

Almost surely, 2^{28691152719941} is an apocalyptic number.

It is an amenable number.

28691152719941 is a deficient number, since it is larger than the sum of its proper divisors (1).

28691152719941 is an equidigital number, since it uses as much as digits as its factorization.

28691152719941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 65.

The spelling of 28691152719941 in words is "twenty-eight trillion, six hundred ninety-one billion, one hundred fifty-two million, seven hundred nineteen thousand, nine hundred forty-one".