17971906672212 has 24 divisors (see below), whose sum is σ = 41965125201216. Its totient is φ = 5986253228928.

The previous prime is 17971906672129. The next prime is 17971906672217. The reversal of 17971906672212 is 21227660917971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17971906672217) 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, 547773973 + ... + 547806780.

It is an arithmetic number, because the mean of its divisors is an integer number (1748546883384).

Almost surely, 2^{17971906672212} is an apocalyptic number.

17971906672212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17971906672212 is an abundant number, since it is smaller than the sum of its proper divisors (23993218529004).

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

17971906672212 is a wasteful number, since it uses less digits than its factorization.

17971906672212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095582127 (or 1095582125 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 60.

The spelling of 17971906672212 in words is "seventeen trillion, nine hundred seventy-one billion, nine hundred six million, six hundred seventy-two thousand, two hundred twelve".