2081867789880 has 896 divisors, whose sum is σ = 7428272832000. Its totient is φ = 524219351040.

The previous prime is 2081867789843. The next prime is 2081867789933. The reversal of 2081867789880 is 889877681802.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 2081867789799 and 2081867789808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 9091125606 + ... + 9091125834.

Almost surely, 2^{2081867789880} is an apocalyptic number.

2081867789880 is a gapful number since it is divisible by the number (20) 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 2081867789880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3714136416000).

2081867789880 is an abundant number, since it is smaller than the sum of its proper divisors (5346405042120).

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

2081867789880 is a wasteful number, since it uses less digits than its factorization.

2081867789880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 173408256, while the sum is 72.

The spelling of 2081867789880 in words is "two trillion, eighty-one billion, eight hundred sixty-seven million, seven hundred eighty-nine thousand, eight hundred eighty".