984557000161 has 32 divisors (see below), whose sum is σ = 1203842140160. Its totient is φ = 787320000000.

The previous prime is 984557000149. The next prime is 984557000171. The reversal of 984557000161 is 161000755489.

It is a 7-Lehmer number, since φ(984557000161) divides (984557000161-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 984557000161 - 2¹⁹ = 984556475873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (984557000171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312661 + ... + 1437661.

It is an arithmetic number, because the mean of its divisors is an integer number (37620066880).

Almost surely, 2^984557000161 is an apocalyptic number.

It is an amenable number.

984557000161 is a deficient number, since it is larger than the sum of its proper divisors (219285139999).

984557000161 is a wasteful number, since it uses less digits than its factorization.

984557000161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125185.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 984557000161 in words is "nine hundred eighty-four billion, five hundred fifty-seven million, one hundred sixty-one", and thus it is an aban number.