1055111321519 has 2 divisors, whose sum is σ = 1055111321520. Its totient is φ = 1055111321518.

The previous prime is 1055111321497. The next prime is 1055111321521. The reversal of 1055111321519 is 9151231115501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055111321519 is a prime.

It is a super-2 number, since 2×1055111321519² (a number of 25 digits) contains 22 as substring.

Together with 1055111321521, 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 (1055111321419) 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, 527555660759 + 527555660760.

It is an arithmetic number, because the mean of its divisors is an integer number (527555660760).

Almost surely, 2^{1055111321519} is an apocalyptic number.

1055111321519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055111321519 is an equidigital number, since it uses as much as digits as its factorization.

1055111321519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 35.

The spelling of 1055111321519 in words is "one trillion, fifty-five billion, one hundred eleven million, three hundred twenty-one thousand, five hundred nineteen".