2180712147940 has 24 divisors (see below), whose sum is σ = 4579812797112. Its totient is φ = 872224423680.

The previous prime is 2180712147931. The next prime is 2180712147959. The reversal of 2180712147940 is 497412170812.

It can be written as a sum of positive squares in 4 ways, for example, as 290989040356 + 1889723107584 = 539434^2 + 1374672^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480769 + ... + 4059208.

It is an arithmetic number, because the mean of its divisors is an integer number (190825533213).

Almost surely, 2^{2180712147940} is an apocalyptic number.

2180712147940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2180712147940 is an abundant number, since it is smaller than the sum of its proper divisors (2399100649172).

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

2180712147940 is a wasteful number, since it uses less digits than its factorization.

2180712147940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554447 (or 7554445 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 2180712147940 in words is "two trillion, one hundred eighty billion, seven hundred twelve million, one hundred forty-seven thousand, nine hundred forty".