18840485588685 has 64 divisors (see below), whose sum is σ = 31657121464320. Its totient is φ = 9555523200000.

The previous prime is 18840485588611. The next prime is 18840485588699. The reversal of 18840485588685 is 58688558404881.

It is not a de Polignac number, because 18840485588685 - 2²⁷ = 18840351370957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18840485588685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69852085 + ... + 70121285.

It is an arithmetic number, because the mean of its divisors is an integer number (494642522880).

Almost surely, 2^{18840485588685} is an apocalyptic number.

18840485588685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18840485588685 is a deficient number, since it is larger than the sum of its proper divisors (12816635875635).

18840485588685 is a wasteful number, since it uses less digits than its factorization.

18840485588685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271850.

The product of its (nonzero) digits is 3145728000, while the sum is 78.

The spelling of 18840485588685 in words is "eighteen trillion, eight hundred forty billion, four hundred eighty-five million, five hundred eighty-eight thousand, six hundred eighty-five".