9666994037487 has 8 divisors (see below), whose sum is σ = 12925228798080. Its totient is φ = 6426710984280.

The previous prime is 9666994037443. The next prime is 9666994037489. The reversal of 9666994037487 is 7847304996669.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9666994037487 - 2¹⁴ = 9666994021103 is a prime.

It is a super-2 number, since 2×9666994037487² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9666994037489) 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, 4487925589 + ... + 4487927742.

It is an arithmetic number, because the mean of its divisors is an integer number (1615653599760).

Almost surely, 2^{9666994037487} is an apocalyptic number.

9666994037487 is a deficient number, since it is larger than the sum of its proper divisors (3258234760593).

9666994037487 is a wasteful number, since it uses less digits than its factorization.

9666994037487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975853693.

The product of its (nonzero) digits is 2962842624, while the sum is 78.

The spelling of 9666994037487 in words is "nine trillion, six hundred sixty-six billion, nine hundred ninety-four million, thirty-seven thousand, four hundred eighty-seven".