20501143099 has 2 divisors, whose sum is σ = 20501143100. Its totient is φ = 20501143098.

The previous prime is 20501143063. The next prime is 20501143109. The reversal of 20501143099 is 99034110502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20501143099 - 2²⁹ = 19964272187 is a prime.

It is not a weakly prime, because it can be changed into another prime (20501143049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10250571549 + 10250571550.

It is an arithmetic number, because the mean of its divisors is an integer number (10250571550).

Almost surely, 2^20501143099 is an apocalyptic number.

20501143099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20501143099 is an equidigital number, since it uses as much as digits as its factorization.

20501143099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 20501143099 in words is "twenty billion, five hundred one million, one hundred forty-three thousand, ninety-nine".