129620094361 has 4 divisors (see below), whose sum is σ = 137244805812. Its totient is φ = 121995382912.

The previous prime is 129620094311. The next prime is 129620094407. The reversal of 129620094361 is 163490026921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88524695961 + 41095398400 = 297531^2 + 202720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129620094361 is a prime.

It is a super-3 number, since 3×129620094361³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129620094311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3812355700 + ... + 3812355733.

It is an arithmetic number, because the mean of its divisors is an integer number (34311201453).

Almost surely, 2^129620094361 is an apocalyptic number.

It is an amenable number.

129620094361 is a deficient number, since it is larger than the sum of its proper divisors (7624711451).

129620094361 is an equidigital number, since it uses as much as digits as its factorization.

129620094361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624711450.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 129620094361 in words is "one hundred twenty-nine billion, six hundred twenty million, ninety-four thousand, three hundred sixty-one".