20626875187579 has 2 divisors, whose sum is σ = 20626875187580. Its totient is φ = 20626875187578.

The previous prime is 20626875187519. The next prime is 20626875187591. The reversal of 20626875187579 is 97578157862602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20626875187579 is a prime.

It is not a weakly prime, because it can be changed into another prime (20626875187519) 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 as a sum of consecutive naturals, namely, 10313437593789 + 10313437593790.

It is an arithmetic number, because the mean of its divisors is an integer number (10313437593790).

Almost surely, 2^{20626875187579} is an apocalyptic number.

20626875187579 is a deficient number, since it is larger than the sum of its proper divisors (1).

20626875187579 is an equidigital number, since it uses as much as digits as its factorization.

20626875187579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 711244800, while the sum is 73.

The spelling of 20626875187579 in words is "twenty trillion, six hundred twenty-six billion, eight hundred seventy-five million, one hundred eighty-seven thousand, five hundred seventy-nine".