20072641961 has 8 divisors (see below), whose sum is σ = 20548671264. Its totient is φ = 19597032000.

The previous prime is 20072641937. The next prime is 20072641991. The reversal of 20072641961 is 16914627002.

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 20072641961 - 2³⁴ = 2892772777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20072641991) 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, 6896 + ... + 200481.

It is an arithmetic number, because the mean of its divisors is an integer number (2568583908).

Almost surely, 2^20072641961 is an apocalyptic number.

It is an amenable number.

20072641961 is a deficient number, since it is larger than the sum of its proper divisors (476029303).

20072641961 is a wasteful number, since it uses less digits than its factorization.

20072641961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209671.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 20072641961 in words is "twenty billion, seventy-two million, six hundred forty-one thousand, nine hundred sixty-one".