28370852761 has 2 divisors, whose sum is σ = 28370852762. Its totient is φ = 28370852760.

The previous prime is 28370852759. The next prime is 28370852773. The reversal of 28370852761 is 16725807382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28268033161 + 102819600 = 168131^2 + 10140^2 .

It is a cyclic number.

It is not a de Polignac number, because 28370852761 - 2¹ = 28370852759 is a prime.

Together with 28370852759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28370852791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14185426380 + 14185426381.

It is an arithmetic number, because the mean of its divisors is an integer number (14185426381).

Almost surely, 2^28370852761 is an apocalyptic number.

It is an amenable number.

28370852761 is a deficient number, since it is larger than the sum of its proper divisors (1).

28370852761 is an equidigital number, since it uses as much as digits as its factorization.

28370852761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 28370852761 in words is "twenty-eight billion, three hundred seventy million, eight hundred fifty-two thousand, seven hundred sixty-one".