20554499268 has 72 divisors (see below), whose sum is σ = 52555269312. Its totient is φ = 6772911552.

The previous prime is 20554499249. The next prime is 20554499279. The reversal of 20554499268 is 86299445502.

20554499268 is a `hidden beast` number, since 2 + 0 + 5 + 544 + 9 + 92 + 6 + 8 = 666.

It is a super-3 number, since 3×20554499268³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1870446 + ... + 1881402.

It is an arithmetic number, because the mean of its divisors is an integer number (729934296).

Almost surely, 2^20554499268 is an apocalyptic number.

It is an amenable number.

20554499268 is an abundant number, since it is smaller than the sum of its proper divisors (32000770044).

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

20554499268 is a wasteful number, since it uses less digits than its factorization.

20554499268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561 (or 11556 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 20554499268 in words is "twenty billion, five hundred fifty-four million, four hundred ninety-nine thousand, two hundred sixty-eight".