42165553853 has 2 divisors, whose sum is σ = 42165553854. Its totient is φ = 42165553852.

The previous prime is 42165553847. The next prime is 42165553877. The reversal of 42165553853 is 35835556124.

It is a happy number.

42165553853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39086080804 + 3079473049 = 197702^2 + 55493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42165553853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42165553798 and 42165553807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42165553153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082776926 + 21082776927.

It is an arithmetic number, because the mean of its divisors is an integer number (21082776927).

Almost surely, 2^42165553853 is an apocalyptic number.

It is an amenable number.

42165553853 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165553853 is an equidigital number, since it uses as much as digits as its factorization.

42165553853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160000, while the sum is 47.

The spelling of 42165553853 in words is "forty-two billion, one hundred sixty-five million, five hundred fifty-three thousand, eight hundred fifty-three".