33055515551 has 2 divisors, whose sum is σ = 33055515552. Its totient is φ = 33055515550.

The previous prime is 33055515541. The next prime is 33055515553. The reversal of 33055515551 is 15551555033.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33055515551 is a prime.

Together with 33055515553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33055515553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16527757775 + 16527757776.

It is an arithmetic number, because the mean of its divisors is an integer number (16527757776).

Almost surely, 2^33055515551 is an apocalyptic number.

33055515551 is a deficient number, since it is larger than the sum of its proper divisors (1).

33055515551 is an equidigital number, since it uses as much as digits as its factorization.

33055515551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140625, while the sum is 38.

The spelling of 33055515551 in words is "thirty-three billion, fifty-five million, five hundred fifteen thousand, five hundred fifty-one".