21441210923558 has 4 divisors (see below), whose sum is σ = 32161816385340. Its totient is φ = 10720605461778.

The previous prime is 21441210923471. The next prime is 21441210923593. The reversal of 21441210923558 is 85532901214412.

It is a semiprime because it is the product of two 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 as a sum of consecutive naturals, namely, 5360302730888 + ... + 5360302730891.

It is an arithmetic number, because the mean of its divisors is an integer number (8040454096335).

Almost surely, 2^{21441210923558} is an apocalyptic number.

21441210923558 is a deficient number, since it is larger than the sum of its proper divisors (10720605461782).

21441210923558 is a wasteful number, since it uses less digits than its factorization.

21441210923558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720605461781.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 21441210923558 in words is "twenty-one trillion, four hundred forty-one billion, two hundred ten million, nine hundred twenty-three thousand, five hundred fifty-eight".