1671712806216 has 16 divisors (see below), whose sum is σ = 4179282015600. Its totient is φ = 557237602064.

The previous prime is 1671712806149. The next prime is 1671712806217. The reversal of 1671712806216 is 6126082171761.

It is not an unprimeable number, because it can be changed into a prime (1671712806217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34827350106 + ... + 34827350153.

It is an arithmetic number, because the mean of its divisors is an integer number (261205125975).

Almost surely, 2^{1671712806216} is an apocalyptic number.

It is an amenable number.

1671712806216 is an abundant number, since it is smaller than the sum of its proper divisors (2507569209384).

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

1671712806216 is a wasteful number, since it uses less digits than its factorization.

1671712806216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69654700268 (or 69654700264 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

Adding to 1671712806216 its reverse (6126082171761), we get a palindrome (7797794977977).

The spelling of 1671712806216 in words is "one trillion, six hundred seventy-one billion, seven hundred twelve million, eight hundred six thousand, two hundred sixteen".