21964743038 has 96 divisors (see below), whose sum is σ = 40659148800. Its totient is φ = 8860924800.

The previous prime is 21964743029. The next prime is 21964743049. The reversal of 21964743038 is 83034746912.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21964742983 and 21964743001.

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 in 47 ways as a sum of consecutive naturals, for example, 17039498 + ... + 17040786.

It is an arithmetic number, because the mean of its divisors is an integer number (423532800).

Almost surely, 2^21964743038 is an apocalyptic number.

21964743038 is a deficient number, since it is larger than the sum of its proper divisors (18694405762).

21964743038 is a wasteful number, since it uses less digits than its factorization.

21964743038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 21964743038 in words is "twenty-one billion, nine hundred sixty-four million, seven hundred forty-three thousand, thirty-eight".