201871640087716 has 27 divisors (see below), whose sum is σ = 358630217197707. Its totient is φ = 99428377528920.

The previous prime is 201871640087713. The next prime is 201871640087729. The reversal of 201871640087716 is 617780046178102.

The square root of 201871640087716 is 14208154.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (201871640087713) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1903839621 + ... + 1903945651.

Almost surely, 2^{201871640087716} is an apocalyptic number.

201871640087716 is the 14208154-th square number.

It is an amenable number.

201871640087716 is a deficient number, since it is larger than the sum of its proper divisors (156758577109991).

201871640087716 is an frugal number, since it uses more digits than its factorization.

201871640087716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212200 (or 106100 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 58.

The spelling of 201871640087716 in words is "two hundred one trillion, eight hundred seventy-one billion, six hundred forty million, eighty-seven thousand, seven hundred sixteen".