54406890647 has 2 divisors, whose sum is σ = 54406890648. Its totient is φ = 54406890646.

The previous prime is 54406890569. The next prime is 54406890649. The reversal of 54406890647 is 74609860445.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54406890647 - 2¹⁰ = 54406889623 is a prime.

Together with 54406890649, 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 (54406890649) 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, 27203445323 + 27203445324.

It is an arithmetic number, because the mean of its divisors is an integer number (27203445324).

Almost surely, 2^54406890647 is an apocalyptic number.

54406890647 is a deficient number, since it is larger than the sum of its proper divisors (1).

54406890647 is an equidigital number, since it uses as much as digits as its factorization.

54406890647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 54406890647 in words is "fifty-four billion, four hundred six million, eight hundred ninety thousand, six hundred forty-seven".