28996318451 has 2 divisors, whose sum is σ = 28996318452. Its totient is φ = 28996318450.

The previous prime is 28996318423. The next prime is 28996318453. The reversal of 28996318451 is 15481369982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28996318451 is a prime.

Together with 28996318453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28996318453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14498159225 + 14498159226.

It is an arithmetic number, because the mean of its divisors is an integer number (14498159226).

Almost surely, 2^28996318451 is an apocalyptic number.

28996318451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28996318451 is an equidigital number, since it uses as much as digits as its factorization.

28996318451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 56.

The spelling of 28996318451 in words is "twenty-eight billion, nine hundred ninety-six million, three hundred eighteen thousand, four hundred fifty-one".