2139817885200 has 90 divisors (see below), whose sum is σ = 7425762467994. Its totient is φ = 570618101760.

The previous prime is 2139817885189. The next prime is 2139817885213. The reversal of 2139817885200 is 25887189312.

2139817885200 is a `hidden beast` number, since 2 + 1 + 39 + 8 + 1 + 7 + 88 + 520 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 11498701824 + 2128319183376 = 107232^2 + 1458876^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 297193329 + ... + 297200528.

Almost surely, 2^{2139817885200} is an apocalyptic number.

2139817885200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2139817885200 is an abundant number, since it is smaller than the sum of its proper divisors (5285944582794).

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

2139817885200 is a wasteful number, since it uses less digits than its factorization.

2139817885200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594393881 (or 594393867 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 2139817885200 in words is "two trillion, one hundred thirty-nine billion, eight hundred seventeen million, eight hundred eighty-five thousand, two hundred".