28601573158901 has 2 divisors, whose sum is σ = 28601573158902. Its totient is φ = 28601573158900.

The previous prime is 28601573158849. The next prime is 28601573158933. The reversal of 28601573158901 is 10985137510682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19171306035025 + 9430267123876 = 4378505^2 + 3070874^2 .

It is a cyclic number.

It is not a de Polignac number, because 28601573158901 - 2²² = 28601568964597 is a prime.

It is a super-2 number, since 2×28601573158901² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28601573158001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300786579450 + 14300786579451.

It is an arithmetic number, because the mean of its divisors is an integer number (14300786579451).

Almost surely, 2^{28601573158901} is an apocalyptic number.

It is an amenable number.

28601573158901 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601573158901 is an equidigital number, since it uses as much as digits as its factorization.

28601573158901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 28601573158901 in words is "twenty-eight trillion, six hundred one billion, five hundred seventy-three million, one hundred fifty-eight thousand, nine hundred one".