55647132887 has 2 divisors, whose sum is σ = 55647132888. Its totient is φ = 55647132886.

The previous prime is 55647132883. The next prime is 55647132899. The reversal of 55647132887 is 78823174655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55647132887 - 2² = 55647132883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55647132883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27823566443 + 27823566444.

It is an arithmetic number, because the mean of its divisors is an integer number (27823566444).

Almost surely, 2^55647132887 is an apocalyptic number.

55647132887 is a deficient number, since it is larger than the sum of its proper divisors (1).

55647132887 is an equidigital number, since it uses as much as digits as its factorization.

55647132887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11289600, while the sum is 56.

The spelling of 55647132887 in words is "fifty-five billion, six hundred forty-seven million, one hundred thirty-two thousand, eight hundred eighty-seven".