9804266640961 has 8 divisors (see below), whose sum is σ = 10757656866600. Its totient is φ = 8879335825152.

The previous prime is 9804266640953. The next prime is 9804266641007. The reversal of 9804266640961 is 1690466624089.

9804266640961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47334400 + 9804219306561 = 6880^2 + 3131169^2 .

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

It is not a de Polignac number, because 9804266640961 - 2³ = 9804266640953 is a prime.

It is a super-2 number, since 2×9804266640961² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9804266640961.

It is not an unprimeable number, because it can be changed into a prime (9804266640901) 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, 7114851736 + ... + 7114853113.

It is an arithmetic number, because the mean of its divisors is an integer number (1344707108325).

Almost surely, 2^{9804266640961} is an apocalyptic number.

It is an amenable number.

9804266640961 is a deficient number, since it is larger than the sum of its proper divisors (953390225639).

9804266640961 is a wasteful number, since it uses less digits than its factorization.

9804266640961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14229704915.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 9804266640961 in words is "nine trillion, eight hundred four billion, two hundred sixty-six million, six hundred forty thousand, nine hundred sixty-one".