21044041510 has 32 divisors (see below), whose sum is σ = 38081951712. Its totient is φ = 8372674560.

The previous prime is 21044041453. The next prime is 21044041531. The reversal of 21044041510 is 1514044012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1878225 + ... + 1889395.

It is an arithmetic number, because the mean of its divisors is an integer number (1190060991).

Almost surely, 2^21044041510 is an apocalyptic number.

21044041510 is a deficient number, since it is larger than the sum of its proper divisors (17037910202).

21044041510 is a wasteful number, since it uses less digits than its factorization.

21044041510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12168.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 21044041510 its reverse (1514044012), we get a palindrome (22558085522).

The spelling of 21044041510 in words is "twenty-one billion, forty-four million, forty-one thousand, five hundred ten".