20404325514499 has 2 divisors, whose sum is σ = 20404325514500. Its totient is φ = 20404325514498.

The previous prime is 20404325514487. The next prime is 20404325514523. The reversal of 20404325514499 is 99441552340402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20404325514499 - 2⁷ = 20404325514371 is a prime.

It is not a weakly prime, because it can be changed into another prime (20404325514449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10202162757249 + 10202162757250.

It is an arithmetic number, because the mean of its divisors is an integer number (10202162757250).

Almost surely, 2^{20404325514499} is an apocalyptic number.

20404325514499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20404325514499 is an equidigital number, since it uses as much as digits as its factorization.

20404325514499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 20404325514499 in words is "twenty trillion, four hundred four billion, three hundred twenty-five million, five hundred fourteen thousand, four hundred ninety-nine".