55111263124639 has 2 divisors, whose sum is σ = 55111263124640. Its totient is φ = 55111263124638.

The previous prime is 55111263124601. The next prime is 55111263124679. The reversal of 55111263124639 is 93642136211155.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55111263124639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55111263124592 and 55111263124601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55111263124679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27555631562319 + 27555631562320.

It is an arithmetic number, because the mean of its divisors is an integer number (27555631562320).

Almost surely, 2^{55111263124639} is an apocalyptic number.

55111263124639 is a deficient number, since it is larger than the sum of its proper divisors (1).

55111263124639 is an equidigital number, since it uses as much as digits as its factorization.

55111263124639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 49.

The spelling of 55111263124639 in words is "fifty-five trillion, one hundred eleven billion, two hundred sixty-three million, one hundred twenty-four thousand, six hundred thirty-nine".