18844851632080 has 40 divisors (see below), whose sum is σ = 46391590638792. Its totient is φ = 7094532378624.

The previous prime is 18844851632071. The next prime is 18844851632081. The reversal of 18844851632080 is 8023615844881.

It can be written as a sum of positive squares in 4 ways, for example, as 3926532476304 + 14918319155776 = 1981548^2 + 3862424^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18844851632081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6928252917 + ... + 6928255636.

Almost surely, 2^{18844851632080} is an apocalyptic number.

18844851632080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18844851632080 is an abundant number, since it is smaller than the sum of its proper divisors (27546739006712).

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

18844851632080 is a wasteful number, since it uses less digits than its factorization.

18844851632080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13856508583 (or 13856508577 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 58.

The spelling of 18844851632080 in words is "eighteen trillion, eight hundred forty-four billion, eight hundred fifty-one million, six hundred thirty-two thousand, eighty".