20722796191 has 8 divisors (see below), whose sum is σ = 21522790800. Its totient is φ = 19928496000.

The previous prime is 20722796183. The next prime is 20722796209. The reversal of 20722796191 is 19169722702.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20722796191 - 2³ = 20722796183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20722796111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1416186 + ... + 1430743.

It is an arithmetic number, because the mean of its divisors is an integer number (2690348850).

Almost surely, 2^20722796191 is an apocalyptic number.

20722796191 is a deficient number, since it is larger than the sum of its proper divisors (799994609).

20722796191 is a wasteful number, since it uses less digits than its factorization.

20722796191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847209.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 20722796191 in words is "twenty billion, seven hundred twenty-two million, seven hundred ninety-six thousand, one hundred ninety-one".