21834776770 has 16 divisors (see below), whose sum is σ = 39354945408. Its totient is φ = 8722278000.

The previous prime is 21834776767. The next prime is 21834776779. The reversal of 21834776770 is 7767743812.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21834776779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446204 + ... + 1461223.

It is an arithmetic number, because the mean of its divisors is an integer number (2459684088).

Almost surely, 2^21834776770 is an apocalyptic number.

21834776770 is a deficient number, since it is larger than the sum of its proper divisors (17520168638).

21834776770 is a wasteful number, since it uses less digits than its factorization.

21834776770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908185.

The product of its (nonzero) digits is 2765952, while the sum is 52.

The spelling of 21834776770 in words is "twenty-one billion, eight hundred thirty-four million, seven hundred seventy-six thousand, seven hundred seventy".