28448850970457 has 2 divisors, whose sum is σ = 28448850970458. Its totient is φ = 28448850970456.

The previous prime is 28448850970429. The next prime is 28448850970517. The reversal of 28448850970457 is 75407905884482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22562652000256 + 5886198970201 = 4750016^2 + 2426149^2 .

It is a cyclic number.

It is not a de Polignac number, because 28448850970457 - 2²⁰ = 28448849921881 is a prime.

It is not a weakly prime, because it can be changed into another prime (28448850970417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14224425485228 + 14224425485229.

It is an arithmetic number, because the mean of its divisors is an integer number (14224425485229).

Almost surely, 2^{28448850970457} is an apocalyptic number.

It is an amenable number.

28448850970457 is a deficient number, since it is larger than the sum of its proper divisors (1).

28448850970457 is an equidigital number, since it uses as much as digits as its factorization.

28448850970457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 722534400, while the sum is 71.

The spelling of 28448850970457 in words is "twenty-eight trillion, four hundred forty-eight billion, eight hundred fifty million, nine hundred seventy thousand, four hundred fifty-seven".