28894295401571 has 2 divisors, whose sum is σ = 28894295401572. Its totient is φ = 28894295401570.

The previous prime is 28894295401561. The next prime is 28894295401627. The reversal of 28894295401571 is 17510459249882.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28894295401571 is a prime.

It is a super-2 number, since 2×28894295401571² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28894295401498 and 28894295401507.

It is not a weakly prime, because it can be changed into another prime (28894295401561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14447147700785 + 14447147700786.

It is an arithmetic number, because the mean of its divisors is an integer number (14447147700786).

Almost surely, 2^{28894295401571} is an apocalyptic number.

28894295401571 is a deficient number, since it is larger than the sum of its proper divisors (1).

28894295401571 is an equidigital number, since it uses as much as digits as its factorization.

28894295401571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58060800, while the sum is 65.

The spelling of 28894295401571 in words is "twenty-eight trillion, eight hundred ninety-four billion, two hundred ninety-five million, four hundred one thousand, five hundred seventy-one".