28311522047 has 2 divisors, whose sum is σ = 28311522048. Its totient is φ = 28311522046.

The previous prime is 28311521939. The next prime is 28311522061. The reversal of 28311522047 is 74022511382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28311522047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28311521998 and 28311522016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28311527047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14155761023 + 14155761024.

It is an arithmetic number, because the mean of its divisors is an integer number (14155761024).

Almost surely, 2^28311522047 is an apocalyptic number.

28311522047 is a deficient number, since it is larger than the sum of its proper divisors (1).

28311522047 is an equidigital number, since it uses as much as digits as its factorization.

28311522047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 28311522047 in words is "twenty-eight billion, three hundred eleven million, five hundred twenty-two thousand, forty-seven".