129765598265690 has 64 divisors (see below), whose sum is σ = 239766276372480. Its totient is φ = 50538876057600.

The previous prime is 129765598265669. The next prime is 129765598265701. The reversal of 129765598265690 is 96562895567921.

129765598265690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129765598265690² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (80) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283628615 + ... + 284085765.

It is an arithmetic number, because the mean of its divisors is an integer number (3746348068320).

Almost surely, 2^{129765598265690} is an apocalyptic number.

129765598265690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129765598265690 is a deficient number, since it is larger than the sum of its proper divisors (110000678106790).

129765598265690 is a wasteful number, since it uses less digits than its factorization.

129765598265690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459287.

The product of its (nonzero) digits is 4408992000, while the sum is 80.

The spelling of 129765598265690 in words is "one hundred twenty-nine trillion, seven hundred sixty-five billion, five hundred ninety-eight million, two hundred sixty-five thousand, six hundred ninety".