18755704129 has 2 divisors, whose sum is σ = 18755704130. Its totient is φ = 18755704128.

The previous prime is 18755704091. The next prime is 18755704139. The reversal of 18755704129 is 92140755781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11267397904 + 7488306225 = 106148^2 + 86535^2 .

It is a cyclic number.

It is not a de Polignac number, because 18755704129 - 2²⁵ = 18722149697 is a prime.

It is not a weakly prime, because it can be changed into another prime (18755704139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9377852064 + 9377852065.

It is an arithmetic number, because the mean of its divisors is an integer number (9377852065).

Almost surely, 2^18755704129 is an apocalyptic number.

It is an amenable number.

18755704129 is a deficient number, since it is larger than the sum of its proper divisors (1).

18755704129 is an equidigital number, since it uses as much as digits as its factorization.

18755704129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 18755704129 in words is "eighteen billion, seven hundred fifty-five million, seven hundred four thousand, one hundred twenty-nine".