129797606893 has 4 divisors (see below), whose sum is σ = 130574838240. Its totient is φ = 129020375548.

The previous prime is 129797606837. The next prime is 129797606977. The reversal of 129797606893 is 398606797921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 398606797921 = 617657 ⋅645353.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129797606893 is a prime.

It is a super-2 number, since 2×129797606893² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129797606093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388615423 + ... + 388615756.

It is an arithmetic number, because the mean of its divisors is an integer number (32643709560).

Almost surely, 2^129797606893 is an apocalyptic number.

It is an amenable number.

129797606893 is a deficient number, since it is larger than the sum of its proper divisors (777231347).

129797606893 is an equidigital number, since it uses as much as digits as its factorization.

129797606893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777231346.

The product of its (nonzero) digits is 61725888, while the sum is 67.

The spelling of 129797606893 in words is "one hundred twenty-nine billion, seven hundred ninety-seven million, six hundred six thousand, eight hundred ninety-three".