20523134039 has 2 divisors, whose sum is σ = 20523134040. Its totient is φ = 20523134038.

The previous prime is 20523134003. The next prime is 20523134057. The reversal of 20523134039 is 93043132502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20523134039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20523133996 and 20523134014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20523134059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261567019 + 10261567020.

It is an arithmetic number, because the mean of its divisors is an integer number (10261567020).

Almost surely, 2^20523134039 is an apocalyptic number.

20523134039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523134039 is an equidigital number, since it uses as much as digits as its factorization.

20523134039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 20523134039 in words is "twenty billion, five hundred twenty-three million, one hundred thirty-four thousand, thirty-nine".