2187875889840 has 160 divisors (see below), whose sum is σ = 6866776498176. Its totient is φ = 576182118400.

The previous prime is 2187875889791. The next prime is 2187875889853. The reversal of 2187875889840 is 489885787812.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55298065 + ... + 55337615.

Almost surely, 2^{2187875889840} is an apocalyptic number.

2187875889840 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 2187875889840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3433388249088).

2187875889840 is an abundant number, since it is smaller than the sum of its proper divisors (4678900608336).

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

2187875889840 is a wasteful number, since it uses less digits than its factorization.

2187875889840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42427 (or 42421 counting only the distinct ones).

The product of its (nonzero) digits is 578027520, while the sum is 75.

The spelling of 2187875889840 in words is "two trillion, one hundred eighty-seven billion, eight hundred seventy-five million, eight hundred eighty-nine thousand, eight hundred forty".