96665186971 has 4 divisors (see below), whose sum is σ = 96665846512. Its totient is φ = 96664527432.

The previous prime is 96665186957. The next prime is 96665186987. The reversal of 96665186971 is 17968156669.

It is a happy number.

96665186971 is a nontrivial binomial coefficient, being equal to C(439694, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(96665186971) divides (96665186971-1)³.

It is a cyclic number.

It is not a de Polignac number, because 96665186971 - 2¹⁵ = 96665154203 is a prime.

It is a deceptive number, since it divides R_96665186970.

It is not an unprimeable number, because it can be changed into a prime (96665186921) 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, 1 + ... + 439693.

It is an arithmetic number, because the mean of its divisors is an integer number (24166461628).

Almost surely, 2^96665186971 is an apocalyptic number.

96665186971 is the 439693-rd triangular number and also the 219847-th hexagonal number.

96665186971 is the 146565-th centered nonagonal number.

96665186971 is a deficient number, since it is larger than the sum of its proper divisors (659541).

96665186971 is a wasteful number, since it uses less digits than its factorization.

96665186971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659540.

The product of its digits is 29393280, while the sum is 64.

The spelling of 96665186971 in words is "ninety-six billion, six hundred sixty-five million, one hundred eighty-six thousand, nine hundred seventy-one".