21441610226554 has 64 divisors (see below), whose sum is σ = 37166495818752. Its totient is φ = 9087216336000.

The previous prime is 21441610226551. The next prime is 21441610226579. The reversal of 21441610226554 is 45562201614412.

It is a self number, because there is not a number n which added to its sum of digits gives 21441610226554.

It is not an unprimeable number, because it can be changed into a prime (21441610226551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4618048557 + ... + 4618053199.

It is an arithmetic number, because the mean of its divisors is an integer number (580726497168).

Almost surely, 2^{21441610226554} is an apocalyptic number.

21441610226554 is a deficient number, since it is larger than the sum of its proper divisors (15724885592198).

21441610226554 is a wasteful number, since it uses less digits than its factorization.

21441610226554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 21441610226554 in words is "twenty-one trillion, four hundred forty-one billion, six hundred ten million, two hundred twenty-six thousand, five hundred fifty-four".