20601386961 has 8 divisors (see below), whose sum is σ = 27545031360. Its totient is φ = 13696000272.

The previous prime is 20601386957. The next prime is 20601386969. The reversal of 20601386961 is 16968310602.

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

It is not a de Polignac number, because 20601386961 - 2² = 20601386957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20601386969) 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, 9563170 + ... + 9565323.

It is an arithmetic number, because the mean of its divisors is an integer number (3443128920).

Almost surely, 2^20601386961 is an apocalyptic number.

It is an amenable number.

20601386961 is a deficient number, since it is larger than the sum of its proper divisors (6943644399).

20601386961 is a wasteful number, since it uses less digits than its factorization.

20601386961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19128855.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 20601386961 in words is "twenty billion, six hundred one million, three hundred eighty-six thousand, nine hundred sixty-one".