20536795139 has 4 divisors (see below), whose sum is σ = 23470623024. Its totient is φ = 17602967256.

The previous prime is 20536795099. The next prime is 20536795157. The reversal of 20536795139 is 93159763502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20536795139 - 2³² = 16241827843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20536705139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466913932 + ... + 1466913945.

It is an arithmetic number, because the mean of its divisors is an integer number (5867655756).

Almost surely, 2^20536795139 is an apocalyptic number.

20536795139 is a deficient number, since it is larger than the sum of its proper divisors (2933827885).

20536795139 is an equidigital number, since it uses as much as digits as its factorization.

20536795139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933827884.

The product of its (nonzero) digits is 1530900, while the sum is 50.

The spelling of 20536795139 in words is "twenty billion, five hundred thirty-six million, seven hundred ninety-five thousand, one hundred thirty-nine".