21964792011 has 8 divisors (see below), whose sum is σ = 30559710720. Its totient is φ = 14006533992.

The previous prime is 21964791983. The next prime is 21964792019. The reversal of 21964792011 is 11029746912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21964792011 - 2¹⁹ = 21964267723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21964792019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159165091 + ... + 159165228.

It is an arithmetic number, because the mean of its divisors is an integer number (3819963840).

Almost surely, 2^21964792011 is an apocalyptic number.

21964792011 is a deficient number, since it is larger than the sum of its proper divisors (8594918709).

21964792011 is a wasteful number, since it uses less digits than its factorization.

21964792011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318330345.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 21964792011 in words is "twenty-one billion, nine hundred sixty-four million, seven hundred ninety-two thousand, eleven".