9801020553 has 32 divisors (see below), whose sum is σ = 14093936640. Its totient is φ = 6039774720.

The previous prime is 9801020533. The next prime is 9801020599. The reversal of 9801020553 is 3550201089.

It is not a de Polignac number, because 9801020553 - 2¹⁷ = 9800889481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9801020503) 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, 380076 + ... + 405042.

It is an arithmetic number, because the mean of its divisors is an integer number (440435520).

Almost surely, 2^9801020553 is an apocalyptic number.

It is an amenable number.

9801020553 is a deficient number, since it is larger than the sum of its proper divisors (4292916087).

9801020553 is a wasteful number, since it uses less digits than its factorization.

9801020553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25157.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 9801020553 is about 99000.1038029759. The cubic root of 9801020553 is about 2140.0492428329.

The spelling of 9801020553 in words is "nine billion, eight hundred one million, twenty thousand, five hundred fifty-three".