20130563639 has 2 divisors, whose sum is σ = 20130563640. Its totient is φ = 20130563638.

The previous prime is 20130563633. The next prime is 20130563657. The reversal of 20130563639 is 93636503102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20130563639 - 2²⁴ = 20113786423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130563633) 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, 10065281819 + 10065281820.

It is an arithmetic number, because the mean of its divisors is an integer number (10065281820).

Almost surely, 2^20130563639 is an apocalyptic number.

20130563639 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130563639 is an equidigital number, since it uses as much as digits as its factorization.

20130563639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 38.

The spelling of 20130563639 in words is "twenty billion, one hundred thirty million, five hundred sixty-three thousand, six hundred thirty-nine".