2171871718702 has 16 divisors (see below), whose sum is σ = 3725060130432. Its totient is φ = 930339297720.

The previous prime is 2171871718661. The next prime is 2171871718711. The reversal of 2171871718702 is 2078171781712.

It is a self number, because there is not a number n which added to its sum of digits gives 2171871718702.

It is a congruent number.

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, 38543128 + ... + 38599435.

It is an arithmetic number, because the mean of its divisors is an integer number (232816258152).

Almost surely, 2^{2171871718702} is an apocalyptic number.

2171871718702 is a deficient number, since it is larger than the sum of its proper divisors (1553188411730).

2171871718702 is a wasteful number, since it uses less digits than its factorization.

2171871718702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77144583.

The product of its (nonzero) digits is 614656, while the sum is 52.

The spelling of 2171871718702 in words is "two trillion, one hundred seventy-one billion, eight hundred seventy-one million, seven hundred eighteen thousand, seven hundred two".