28055834431 has 2 divisors, whose sum is σ = 28055834432. Its totient is φ = 28055834430.

The previous prime is 28055834419. The next prime is 28055834441. The reversal of 28055834431 is 13443855082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28055834431 is a prime.

It is a super-2 number, since 2×28055834431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28055834441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027917215 + 14027917216.

It is an arithmetic number, because the mean of its divisors is an integer number (14027917216).

Almost surely, 2^28055834431 is an apocalyptic number.

28055834431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28055834431 is an equidigital number, since it uses as much as digits as its factorization.

28055834431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 28055834431 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-four thousand, four hundred thirty-one".