21484474554 has 16 divisors (see below), whose sum is σ = 42976626048. Its totient is φ = 7160212032.

The previous prime is 21484474511. The next prime is 21484474573. The reversal of 21484474554 is 45547448412.

It is a super-2 number, since 2×21484474554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283167 + ... + 350930.

It is an arithmetic number, because the mean of its divisors is an integer number (2686039128).

Almost surely, 2^21484474554 is an apocalyptic number.

21484474554 is an abundant number, since it is smaller than the sum of its proper divisors (21492151494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21484474554 is a wasteful number, since it uses less digits than its factorization.

21484474554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639749.

The product of its digits is 2867200, while the sum is 48.

The spelling of 21484474554 in words is "twenty-one billion, four hundred eighty-four million, four hundred seventy-four thousand, five hundred fifty-four".