21950782601 has 8 divisors (see below), whose sum is σ = 23966771808. Its totient is φ = 19938204000.

The previous prime is 21950782589. The next prime is 21950782673. The reversal of 21950782601 is 10628705912.

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

It is not a de Polignac number, because 21950782601 - 2³⁰ = 20877040777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21950782691) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 839180 + ... + 864941.

It is an arithmetic number, because the mean of its divisors is an integer number (2995846476).

Almost surely, 2^21950782601 is an apocalyptic number.

It is an amenable number.

21950782601 is a deficient number, since it is larger than the sum of its proper divisors (2015989207).

21950782601 is a wasteful number, since it uses less digits than its factorization.

21950782601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705303.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 21950782601 in words is "twenty-one billion, nine hundred fifty million, seven hundred eighty-two thousand, six hundred one".