20129046727 has 2 divisors, whose sum is σ = 20129046728. Its totient is φ = 20129046726.

The previous prime is 20129046667. The next prime is 20129046739. The reversal of 20129046727 is 72764092102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20129046727 - 2¹⁵ = 20129013959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20129046727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20129040727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10064523363 + 10064523364.

It is an arithmetic number, because the mean of its divisors is an integer number (10064523364).

Almost surely, 2^20129046727 is an apocalyptic number.

20129046727 is a deficient number, since it is larger than the sum of its proper divisors (1).

20129046727 is an equidigital number, since it uses as much as digits as its factorization.

20129046727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 20129046727 in words is "twenty billion, one hundred twenty-nine million, forty-six thousand, seven hundred twenty-seven".