10821554433 has 12 divisors (see below), whose sum is σ = 15963712128. Its totient is φ = 7060872120.

The previous prime is 10821554413. The next prime is 10821554453. The reversal of 10821554433 is 33445512801.

10821554433 is a `hidden beast` number, since 1 + 0 + 8 + 215 + 5 + 4 + 433 = 666.

It is an interprime number because it is at equal distance from previous prime (10821554413) and next prime (10821554453).

It is not a de Polignac number, because 10821554433 - 2⁹ = 10821553921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10821554413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12791013 + ... + 12791858.

It is an arithmetic number, because the mean of its divisors is an integer number (1330309344).

Almost surely, 2^10821554433 is an apocalyptic number.

It is an amenable number.

10821554433 is a deficient number, since it is larger than the sum of its proper divisors (5142157695).

10821554433 is a wasteful number, since it uses less digits than its factorization.

10821554433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25582924 (or 25582921 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 10821554433 in words is "ten billion, eight hundred twenty-one million, five hundred fifty-four thousand, four hundred thirty-three".