9802086767921 has 32 divisors (see below), whose sum is σ = 11465853868800. Its totient is φ = 8205648572160.

The previous prime is 9802086767873. The next prime is 9802086767927. The reversal of 9802086767921 is 1297676802089.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9802086767921 - 2¹⁴ = 9802086751537 is a prime.

It is a super-2 number, since 2×9802086767921² (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 (9802086767927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647464970 + ... + 647480108.

It is an arithmetic number, because the mean of its divisors is an integer number (358307933400).

Almost surely, 2^{9802086767921} is an apocalyptic number.

It is an amenable number.

9802086767921 is a deficient number, since it is larger than the sum of its proper divisors (1663767100879).

9802086767921 is a wasteful number, since it uses less digits than its factorization.

9802086767921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23049.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 9802086767921 in words is "nine trillion, eight hundred two billion, eighty-six million, seven hundred sixty-seven thousand, nine hundred twenty-one".