9854164550961 has 40 divisors (see below), whose sum is σ = 15037324600320. Its totient is φ = 6428661247008.

The previous prime is 9854164550957. The next prime is 9854164550963. The reversal of 9854164550961 is 1690554614589.

9854164550961 is a `hidden beast` number, since 9 + 8 + 5 + 4 + 1 + 64 + 5 + 509 + 61 = 666.

It is not a de Polignac number, because 9854164550961 - 2² = 9854164550957 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9854164550963) 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 39 ways as a sum of consecutive naturals, for example, 1352391 + ... + 4640828.

It is an arithmetic number, because the mean of its divisors is an integer number (375933115008).

Almost surely, 2^{9854164550961} is an apocalyptic number.

It is an amenable number.

9854164550961 is a deficient number, since it is larger than the sum of its proper divisors (5183160049359).

9854164550961 is a wasteful number, since it uses less digits than its factorization.

9854164550961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5993667 (or 5993658 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 63.

The spelling of 9854164550961 in words is "nine trillion, eight hundred fifty-four billion, one hundred sixty-four million, five hundred fifty thousand, nine hundred sixty-one".