20136632279 has 2 divisors, whose sum is σ = 20136632280. Its totient is φ = 20136632278.

The previous prime is 20136632249. The next prime is 20136632333. The reversal of 20136632279 is 97223663102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20136632279 - 2³² = 15841664983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20136632249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10068316139 + 10068316140.

It is an arithmetic number, because the mean of its divisors is an integer number (10068316140).

Almost surely, 2^20136632279 is an apocalyptic number.

20136632279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20136632279 is an equidigital number, since it uses as much as digits as its factorization.

20136632279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 20136632279 in words is "twenty billion, one hundred thirty-six million, six hundred thirty-two thousand, two hundred seventy-nine".