54221121563 has 16 divisors (see below), whose sum is σ = 67874604480. Its totient is φ = 42233081856.

The previous prime is 54221121523. The next prime is 54221121593. The reversal of 54221121563 is 36512112245.

It is not a de Polignac number, because 54221121563 - 2¹⁸ = 54220859419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54221121523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7852406 + ... + 7859307.

It is an arithmetic number, because the mean of its divisors is an integer number (4242162780).

Almost surely, 2^54221121563 is an apocalyptic number.

54221121563 is a deficient number, since it is larger than the sum of its proper divisors (13653482917).

54221121563 is a wasteful number, since it uses less digits than its factorization.

54221121563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15711766.

The product of its digits is 14400, while the sum is 32.

The spelling of 54221121563 in words is "fifty-four billion, two hundred twenty-one million, one hundred twenty-one thousand, five hundred sixty-three".