20020311499 has 2 divisors, whose sum is σ = 20020311500. Its totient is φ = 20020311498.

The previous prime is 20020311497. The next prime is 20020311529. The reversal of 20020311499 is 99411302002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020311499 - 2¹ = 20020311497 is a prime.

Together with 20020311497, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20020311499.

It is not a weakly prime, because it can be changed into another prime (20020311491) 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, 10010155749 + 10010155750.

It is an arithmetic number, because the mean of its divisors is an integer number (10010155750).

Almost surely, 2^20020311499 is an apocalyptic number.

20020311499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020311499 is an equidigital number, since it uses as much as digits as its factorization.

20020311499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 20020311499 in words is "twenty billion, twenty million, three hundred eleven thousand, four hundred ninety-nine".