20305626492479 has 2 divisors, whose sum is σ = 20305626492480. Its totient is φ = 20305626492478.

The previous prime is 20305626492413. The next prime is 20305626492527. The reversal of 20305626492479 is 97429462650302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20305626492479 - 2³² = 20301331525183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20305626492379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10152813246239 + 10152813246240.

It is an arithmetic number, because the mean of its divisors is an integer number (10152813246240).

Almost surely, 2^{20305626492479} is an apocalyptic number.

20305626492479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20305626492479 is an equidigital number, since it uses as much as digits as its factorization.

20305626492479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 59.

The spelling of 20305626492479 in words is "twenty trillion, three hundred five billion, six hundred twenty-six million, four hundred ninety-two thousand, four hundred seventy-nine".