21441546057 has 16 divisors (see below), whose sum is σ = 28997083520. Its totient is φ = 14090412672.

The previous prime is 21441546041. The next prime is 21441546083. The reversal of 21441546057 is 75064514412.

It is not a de Polignac number, because 21441546057 - 2⁴ = 21441546041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21441546457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364428 + ... + 419154.

It is an arithmetic number, because the mean of its divisors is an integer number (1812317720).

Almost surely, 2^21441546057 is an apocalyptic number.

It is an amenable number.

21441546057 is a deficient number, since it is larger than the sum of its proper divisors (7555537463).

21441546057 is a wasteful number, since it uses less digits than its factorization.

21441546057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56592.

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 21441546057 in words is "twenty-one billion, four hundred forty-one million, five hundred forty-six thousand, fifty-seven".