21441652454 has 8 divisors (see below), whose sum is σ = 33271529760. Its totient is φ = 10351142536.

The previous prime is 21441652447. The next prime is 21441652469. The reversal of 21441652454 is 45425614412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 184841774 + ... + 184841889.

It is an arithmetic number, because the mean of its divisors is an integer number (4158941220).

Almost surely, 2^21441652454 is an apocalyptic number.

21441652454 is a deficient number, since it is larger than the sum of its proper divisors (11829877306).

21441652454 is a wasteful number, since it uses less digits than its factorization.

21441652454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369683694.

The product of its digits is 153600, while the sum is 38.

The spelling of 21441652454 in words is "twenty-one billion, four hundred forty-one million, six hundred fifty-two thousand, four hundred fifty-four".