55405012667 has 2 divisors, whose sum is σ = 55405012668. Its totient is φ = 55405012666.

The previous prime is 55405012627. The next prime is 55405012669. The reversal of 55405012667 is 76621050455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55405012667 - 2¹⁰ = 55405011643 is a prime.

Together with 55405012669, 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 (55405012669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27702506333 + 27702506334.

It is an arithmetic number, because the mean of its divisors is an integer number (27702506334).

Almost surely, 2^55405012667 is an apocalyptic number.

55405012667 is a deficient number, since it is larger than the sum of its proper divisors (1).

55405012667 is an equidigital number, since it uses as much as digits as its factorization.

55405012667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 55405012667 in words is "fifty-five billion, four hundred five million, twelve thousand, six hundred sixty-seven".