16555681594 has 16 divisors (see below), whose sum is σ = 25207752960. Its totient is φ = 8153323920.

The previous prime is 16555681579. The next prime is 16555681609. The reversal of 16555681594 is 49518655561.

It is an interprime number because it is at equal distance from previous prime (16555681579) and next prime (16555681609).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91432 + ... + 203644.

It is an arithmetic number, because the mean of its divisors is an integer number (1575484560).

Almost surely, 2^16555681594 is an apocalyptic number.

16555681594 is a deficient number, since it is larger than the sum of its proper divisors (8652071366).

16555681594 is a wasteful number, since it uses less digits than its factorization.

16555681594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113325.

The product of its digits is 6480000, while the sum is 55.

The spelling of 16555681594 in words is "sixteen billion, five hundred fifty-five million, six hundred eighty-one thousand, five hundred ninety-four".