18940055055037 has 2 divisors, whose sum is σ = 18940055055038. Its totient is φ = 18940055055036.

The previous prime is 18940055055011. The next prime is 18940055055071. The reversal of 18940055055037 is 73055055004981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15745492227481 + 3194562827556 = 3968059^2 + 1787334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18940055055037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18940055055437) 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, 9470027527518 + 9470027527519.

It is an arithmetic number, because the mean of its divisors is an integer number (9470027527519).

Almost surely, 2^{18940055055037} is an apocalyptic number.

It is an amenable number.

18940055055037 is a deficient number, since it is larger than the sum of its proper divisors (1).

18940055055037 is an equidigital number, since it uses as much as digits as its factorization.

18940055055037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780000, while the sum is 52.

The spelling of 18940055055037 in words is "eighteen trillion, nine hundred forty billion, fifty-five million, fifty-five thousand, thirty-seven".