21724114554 has 12 divisors (see below), whose sum is σ = 47068914906. Its totient is φ = 7241371512.

The previous prime is 21724114549. The next prime is 21724114561. The reversal of 21724114554 is 45541142712.

21724114554 is a `hidden beast` number, since 21 + 72 + 4 + 1 + 14 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16405767225 + 5318347329 = 128085^2 + 72927^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 603447609 + ... + 603447644.

Almost surely, 2^21724114554 is an apocalyptic number.

21724114554 is an abundant number, since it is smaller than the sum of its proper divisors (25344800352).

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

21724114554 is a wasteful number, since it uses less digits than its factorization.

21724114554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206895261 (or 1206895258 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The spelling of 21724114554 in words is "twenty-one billion, seven hundred twenty-four million, one hundred fourteen thousand, five hundred fifty-four".