104681591887 has 2 divisors, whose sum is σ = 104681591888. Its totient is φ = 104681591886.

The previous prime is 104681591863. The next prime is 104681591921. The reversal of 104681591887 is 788195186401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104681591887 - 2¹¹ = 104681589839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104681591587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52340795943 + 52340795944.

It is an arithmetic number, because the mean of its divisors is an integer number (52340795944).

Almost surely, 2^104681591887 is an apocalyptic number.

104681591887 is a deficient number, since it is larger than the sum of its proper divisors (1).

104681591887 is an equidigital number, since it uses as much as digits as its factorization.

104681591887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 58.

The spelling of 104681591887 in words is "one hundred four billion, six hundred eighty-one million, five hundred ninety-one thousand, eight hundred eighty-seven".