104042063861 has 2 divisors, whose sum is σ = 104042063862. Its totient is φ = 104042063860.

The previous prime is 104042063857. The next prime is 104042063869. The reversal of 104042063861 is 168360240401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99335280625 + 4706783236 = 315175^2 + 68606^2 .

It is a cyclic number.

It is not a de Polignac number, because 104042063861 - 2² = 104042063857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104042063869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52021031930 + 52021031931.

It is an arithmetic number, because the mean of its divisors is an integer number (52021031931).

Almost surely, 2^104042063861 is an apocalyptic number.

It is an amenable number.

104042063861 is a deficient number, since it is larger than the sum of its proper divisors (1).

104042063861 is an equidigital number, since it uses as much as digits as its factorization.

104042063861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 104042063861 in words is "one hundred four billion, forty-two million, sixty-three thousand, eight hundred sixty-one".