129711836827 has 2 divisors, whose sum is σ = 129711836828. Its totient is φ = 129711836826.

The previous prime is 129711836743. The next prime is 129711836851. The reversal of 129711836827 is 728638117921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129711836827 - 2¹⁹ = 129711312539 is a prime.

It is a super-2 number, since 2×129711836827² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129711836227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64855918413 + 64855918414.

It is an arithmetic number, because the mean of its divisors is an integer number (64855918414).

Almost surely, 2^129711836827 is an apocalyptic number.

129711836827 is a deficient number, since it is larger than the sum of its proper divisors (1).

129711836827 is an equidigital number, since it uses as much as digits as its factorization.

129711836827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 55.

The spelling of 129711836827 in words is "one hundred twenty-nine billion, seven hundred eleven million, eight hundred thirty-six thousand, eight hundred twenty-seven".