54042610861 has 2 divisors, whose sum is σ = 54042610862. Its totient is φ = 54042610860.

The previous prime is 54042610823. The next prime is 54042610913. The reversal of 54042610861 is 16801624045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39097548361 + 14945062500 = 197731^2 + 122250^2 .

It is a cyclic number.

It is not a de Polignac number, because 54042610861 - 2⁷ = 54042610733 is a prime.

It is a super-2 number, since 2×54042610861² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54042610861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54042610561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27021305430 + 27021305431.

It is an arithmetic number, because the mean of its divisors is an integer number (27021305431).

Almost surely, 2^54042610861 is an apocalyptic number.

It is an amenable number.

54042610861 is a deficient number, since it is larger than the sum of its proper divisors (1).

54042610861 is an equidigital number, since it uses as much as digits as its factorization.

54042610861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 54042610861 in words is "fifty-four billion, forty-two million, six hundred ten thousand, eight hundred sixty-one".