20580696445021 has 4 divisors (see below), whose sum is σ = 20678235290944. Its totient is φ = 20483157599100.

The previous prime is 20580696444991. The next prime is 20580696445081. The reversal of 20580696445021 is 12054469608502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20580696445021 - 2¹⁷ = 20580696313949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20580696445021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20580696445081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48769422645 + ... + 48769423066.

It is an arithmetic number, because the mean of its divisors is an integer number (5169558822736).

Almost surely, 2^{20580696445021} is an apocalyptic number.

It is an amenable number.

20580696445021 is a deficient number, since it is larger than the sum of its proper divisors (97538845923).

20580696445021 is an equidigital number, since it uses as much as digits as its factorization.

20580696445021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97538845922.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 20580696445021 in words is "twenty trillion, five hundred eighty billion, six hundred ninety-six million, four hundred forty-five thousand, twenty-one".