129030387265 has 16 divisors (see below), whose sum is σ = 166778816400. Its totient is φ = 95265775872.

The previous prime is 129030387229. The next prime is 129030387301. The reversal of 129030387265 is 562783030921.

It is a Cunningham number, because it is equal to 359208²+1.

It is an interprime number because it is at equal distance from previous prime (129030387229) and next prime (129030387301).

It can be written as a sum of positive squares in 8 ways, for example, as 33258087424 + 95772299841 = 182368^2 + 309471^2 .

It is a cyclic number.

It is not a de Polignac number, because 129030387265 - 2²¹ = 129028290113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158131 + ... + 532039.

It is an arithmetic number, because the mean of its divisors is an integer number (10423676025).

Almost surely, 2^129030387265 is an apocalyptic number.

It is an amenable number.

129030387265 is a deficient number, since it is larger than the sum of its proper divisors (37748429135).

129030387265 is a wasteful number, since it uses less digits than its factorization.

129030387265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379236.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 129030387265 in words is "one hundred twenty-nine billion, thirty million, three hundred eighty-seven thousand, two hundred sixty-five".