18404246441688 has 64 divisors (see below), whose sum is σ = 49304076312960. Its totient is φ = 5704316391936.

The previous prime is 18404246441639. The next prime is 18404246441747. The reversal of 18404246441688 is 88614464240481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271703770 + ... + 271771497.

It is an arithmetic number, because the mean of its divisors is an integer number (770376192390).

Almost surely, 2^{18404246441688} is an apocalyptic number.

It is an amenable number.

18404246441688 is an abundant number, since it is smaller than the sum of its proper divisors (30899829871272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18404246441688 is a wasteful number, since it uses less digits than its factorization.

18404246441688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543475376 (or 543475372 counting only the distinct ones).

The product of its (nonzero) digits is 37748736, while the sum is 60.

The spelling of 18404246441688 in words is "eighteen trillion, four hundred four billion, two hundred forty-six million, four hundred forty-one thousand, six hundred eighty-eight".