28601571574489 has 2 divisors, whose sum is σ = 28601571574490. Its totient is φ = 28601571574488.

The previous prime is 28601571574363. The next prime is 28601571574547. The reversal of 28601571574489 is 98447517510682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26902811251264 + 1698760323225 = 5186792^2 + 1303365^2 .

It is a cyclic number.

It is not a de Polignac number, because 28601571574489 - 2³⁷ = 28464132621017 is a prime.

It is a super-2 number, since 2×28601571574489² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28601572574489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300785787244 + 14300785787245.

It is an arithmetic number, because the mean of its divisors is an integer number (14300785787245).

Almost surely, 2^{28601571574489} is an apocalyptic number.

It is an amenable number.

28601571574489 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601571574489 is an equidigital number, since it uses as much as digits as its factorization.

28601571574489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 28601571574489 in words is "twenty-eight trillion, six hundred one billion, five hundred seventy-one million, five hundred seventy-four thousand, four hundred eighty-nine".