1808641155072 has 112 divisors (see below), whose sum is σ = 4857960293712. Its totient is φ = 598478684160.

The previous prime is 1808641155071. The next prime is 1808641155091. The reversal of 1808641155072 is 2705511468081.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808641155071) 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, 3098322 + ... + 3635502.

Almost surely, 2^{1808641155072} is an apocalyptic number.

1808641155072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808641155072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2428980146856).

1808641155072 is an abundant number, since it is smaller than the sum of its proper divisors (3049319138640).

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

1808641155072 is an equidigital number, since it uses as much as digits as its factorization.

1808641155072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537347 (or 537323 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 1808641155072 in words is "one trillion, eight hundred eight billion, six hundred forty-one million, one hundred fifty-five thousand, seventy-two".