1055918238887 has 2 divisors, whose sum is σ = 1055918238888. Its totient is φ = 1055918238886.

The previous prime is 1055918238871. The next prime is 1055918238931. The reversal of 1055918238887 is 7888328195501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1055918238887 - 2⁴ = 1055918238871 is a prime.

It is a super-2 number, since 2×1055918238887² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055918238827) 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, 527959119443 + 527959119444.

It is an arithmetic number, because the mean of its divisors is an integer number (527959119444).

Almost surely, 2^{1055918238887} is an apocalyptic number.

1055918238887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055918238887 is an equidigital number, since it uses as much as digits as its factorization.

1055918238887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38707200, while the sum is 65.

The spelling of 1055918238887 in words is "one trillion, fifty-five billion, nine hundred eighteen million, two hundred thirty-eight thousand, eight hundred eighty-seven".