28110057697 has 2 divisors, whose sum is σ = 28110057698. Its totient is φ = 28110057696.

The previous prime is 28110057671. The next prime is 28110057713. The reversal of 28110057697 is 79675001182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15916597921 + 12193459776 = 126161^2 + 110424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28110057697 is a prime.

It is not a weakly prime, because it can be changed into another prime (28110057607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14055028848 + 14055028849.

It is an arithmetic number, because the mean of its divisors is an integer number (14055028849).

Almost surely, 2^28110057697 is an apocalyptic number.

It is an amenable number.

28110057697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28110057697 is an equidigital number, since it uses as much as digits as its factorization.

28110057697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 28110057697 in words is "twenty-eight billion, one hundred ten million, fifty-seven thousand, six hundred ninety-seven".