20672686079 has 2 divisors, whose sum is σ = 20672686080. Its totient is φ = 20672686078.

The previous prime is 20672686061. The next prime is 20672686087. The reversal of 20672686079 is 97068627602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20672686079 - 2¹² = 20672681983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20672686079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20672683079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10336343039 + 10336343040.

It is an arithmetic number, because the mean of its divisors is an integer number (10336343040).

Almost surely, 2^20672686079 is an apocalyptic number.

20672686079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20672686079 is an equidigital number, since it uses as much as digits as its factorization.

20672686079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 20672686079 in words is "twenty billion, six hundred seventy-two million, six hundred eighty-six thousand, seventy-nine".