129732769801 has 2 divisors, whose sum is σ = 129732769802. Its totient is φ = 129732769800.

The previous prime is 129732769753. The next prime is 129732769843. The reversal of 129732769801 is 108967237921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89654731776 + 40078038025 = 299424^2 + 200195^2 .

It is a cyclic number.

It is not a de Polignac number, because 129732769801 - 2¹⁷ = 129732638729 is a prime.

It is not a weakly prime, because it can be changed into another prime (129732769501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64866384900 + 64866384901.

It is an arithmetic number, because the mean of its divisors is an integer number (64866384901).

Almost surely, 2^129732769801 is an apocalyptic number.

It is an amenable number.

129732769801 is a deficient number, since it is larger than the sum of its proper divisors (1).

129732769801 is an equidigital number, since it uses as much as digits as its factorization.

129732769801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 129732769801 in words is "one hundred twenty-nine billion, seven hundred thirty-two million, seven hundred sixty-nine thousand, eight hundred one".