129732769877 has 2 divisors, whose sum is σ = 129732769878. Its totient is φ = 129732769876.

The previous prime is 129732769847. The next prime is 129732769889. The reversal of 129732769877 is 778967237921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127105797361 + 2626972516 = 356519^2 + 51254^2 .

It is a cyclic number.

It is not a de Polignac number, because 129732769877 - 2¹⁰ = 129732768853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129732769847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64866384938 + 64866384939.

It is an arithmetic number, because the mean of its divisors is an integer number (64866384939).

Almost surely, 2^129732769877 is an apocalyptic number.

It is an amenable number.

129732769877 is a deficient number, since it is larger than the sum of its proper divisors (1).

129732769877 is an equidigital number, since it uses as much as digits as its factorization.

129732769877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112021056, while the sum is 68.

The spelling of 129732769877 in words is "one hundred twenty-nine billion, seven hundred thirty-two million, seven hundred sixty-nine thousand, eight hundred seventy-seven".