28465290277 has 2 divisors, whose sum is σ = 28465290278. Its totient is φ = 28465290276.

The previous prime is 28465290241. The next prime is 28465290311. The reversal of 28465290277 is 77209256482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15356414241 + 13108876036 = 123921^2 + 114494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28465290277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28465297277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14232645138 + 14232645139.

It is an arithmetic number, because the mean of its divisors is an integer number (14232645139).

Almost surely, 2^28465290277 is an apocalyptic number.

It is an amenable number.

28465290277 is a deficient number, since it is larger than the sum of its proper divisors (1).

28465290277 is an equidigital number, since it uses as much as digits as its factorization.

28465290277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 28465290277 in words is "twenty-eight billion, four hundred sixty-five million, two hundred ninety thousand, two hundred seventy-seven".