2001554531163 has 48 divisors (see below), whose sum is σ = 3204264492000. Its totient is φ = 1193866698240.

The previous prime is 2001554531153. The next prime is 2001554531167. The reversal of 2001554531163 is 3611354551002.

2001554531163 is a `hidden beast` number, since 2 + 0 + 0 + 15 + 54 + 531 + 1 + 63 = 666.

It is not a de Polignac number, because 2001554531163 - 2¹⁰ = 2001554530139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001554531167) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 985431 + ... + 2230287.

It is an arithmetic number, because the mean of its divisors is an integer number (66755510250).

Almost surely, 2^{2001554531163} is an apocalyptic number.

2001554531163 is a deficient number, since it is larger than the sum of its proper divisors (1202709960837).

2001554531163 is a wasteful number, since it uses less digits than its factorization.

2001554531163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245132 (or 1245129 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 2001554531163 in words is "two trillion, one billion, five hundred fifty-four million, five hundred thirty-one thousand, one hundred sixty-three".