55108772567 has 2 divisors, whose sum is σ = 55108772568. Its totient is φ = 55108772566.

The previous prime is 55108772557. The next prime is 55108772569. The reversal of 55108772567 is 76527780155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55108772567 is a prime.

Together with 55108772569, 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 (55108772569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27554386283 + 27554386284.

It is an arithmetic number, because the mean of its divisors is an integer number (27554386284).

Almost surely, 2^55108772567 is an apocalyptic number.

55108772567 is a deficient number, since it is larger than the sum of its proper divisors (1).

55108772567 is an equidigital number, since it uses as much as digits as its factorization.

55108772567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4116000, while the sum is 53.

The spelling of 55108772567 in words is "fifty-five billion, one hundred eight million, seven hundred seventy-two thousand, five hundred sixty-seven".