28952985797 has 2 divisors, whose sum is σ = 28952985798. Its totient is φ = 28952985796.

The previous prime is 28952985781. The next prime is 28952985851. The reversal of 28952985797 is 79758925982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20072939041 + 8880046756 = 141679^2 + 94234^2 .

It is a cyclic number.

It is not a de Polignac number, because 28952985797 - 2⁴ = 28952985781 is a prime.

It is a super-2 number, since 2×28952985797² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28952985797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28952975797) 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, 14476492898 + 14476492899.

It is an arithmetic number, because the mean of its divisors is an integer number (14476492899).

Almost surely, 2^28952985797 is an apocalyptic number.

It is an amenable number.

28952985797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28952985797 is an equidigital number, since it uses as much as digits as its factorization.

28952985797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 228614400, while the sum is 71.

The spelling of 28952985797 in words is "twenty-eight billion, nine hundred fifty-two million, nine hundred eighty-five thousand, seven hundred ninety-seven".