21554740282 has 16 divisors (see below), whose sum is σ = 32633399232. Its totient is φ = 10677029440.

The previous prime is 21554740241. The next prime is 21554740301. The reversal of 21554740282 is 28204745512.

It is a happy number.

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, 491307 + ... + 533377.

It is an arithmetic number, because the mean of its divisors is an integer number (2039587452).

Almost surely, 2^21554740282 is an apocalyptic number.

21554740282 is a deficient number, since it is larger than the sum of its proper divisors (11078658950).

21554740282 is a wasteful number, since it uses less digits than its factorization.

21554740282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44453.

The product of its (nonzero) digits is 179200, while the sum is 40.

The spelling of 21554740282 in words is "twenty-one billion, five hundred fifty-four million, seven hundred forty thousand, two hundred eighty-two".