20860967642 has 8 divisors (see below), whose sum is σ = 31758488256. Its totient is φ = 10274804892.

The previous prime is 20860967641. The next prime is 20860967651. The reversal of 20860967642 is 24676906802.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (20860967641) 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 3 ways as a sum of consecutive naturals, for example, 77839298 + ... + 77839565.

It is an arithmetic number, because the mean of its divisors is an integer number (3969811032).

Almost surely, 2^20860967642 is an apocalyptic number.

20860967642 is a deficient number, since it is larger than the sum of its proper divisors (10897520614).

20860967642 is a wasteful number, since it uses less digits than its factorization.

20860967642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155678932.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 20860967642 in words is "twenty billion, eight hundred sixty million, nine hundred sixty-seven thousand, six hundred forty-two".