9851397166811 has 8 divisors (see below), whose sum is σ = 10171305999744. Its totient is φ = 9531620948160.

The previous prime is 9851397166769. The next prime is 9851397166837. The reversal of 9851397166811 is 1186617931589.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9851397166811 is a prime.

It is a super-2 number, since 2×9851397166811² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9851397186811) 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, 33002576 + ... + 33299741.

It is an arithmetic number, because the mean of its divisors is an integer number (1271413249968).

Almost surely, 2^{9851397166811} is an apocalyptic number.

9851397166811 is a deficient number, since it is larger than the sum of its proper divisors (319908832933).

9851397166811 is a wasteful number, since it uses less digits than its factorization.

9851397166811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66307141.

The product of its digits is 19595520, while the sum is 65.

The spelling of 9851397166811 in words is "nine trillion, eight hundred fifty-one billion, three hundred ninety-seven million, one hundred sixty-six thousand, eight hundred eleven".