2171872760140 has 24 divisors (see below), whose sum is σ = 4561022833920. Its totient is φ = 868731954048.

The previous prime is 2171872760137. The next prime is 2171872760149. The reversal of 2171872760140 is 410672781712.

It is a super-4 number, since 4×2171872760140⁴ (a number of 50 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2171872760149) 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, 7660 + ... + 2084179.

It is an arithmetic number, because the mean of its divisors is an integer number (190042618080).

Almost surely, 2^{2171872760140} is an apocalyptic number.

2171872760140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171872760140 is an abundant number, since it is smaller than the sum of its proper divisors (2389150073780).

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

2171872760140 is a wasteful number, since it uses less digits than its factorization.

2171872760140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143761 (or 2143759 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 2171872760140 in words is "two trillion, one hundred seventy-one billion, eight hundred seventy-two million, seven hundred sixty thousand, one hundred forty".