129377122841 has 4 divisors (see below), whose sum is σ = 129385611300. Its totient is φ = 129368634384.

The previous prime is 129377122801. The next prime is 129377122933. The reversal of 129377122841 is 148221773921.

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 54627375625 + 74749747216 = 233725^2 + 273404^2 .

It is a cyclic number.

It is not a de Polignac number, because 129377122841 - 2²² = 129372928537 is a prime.

It is a super-2 number, since 2×129377122841² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129377122801) 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, 4221326 + ... + 4251863.

It is an arithmetic number, because the mean of its divisors is an integer number (32346402825).

Almost surely, 2^129377122841 is an apocalyptic number.

It is an amenable number.

129377122841 is a deficient number, since it is larger than the sum of its proper divisors (8488459).

129377122841 is an equidigital number, since it uses as much as digits as its factorization.

129377122841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8488458.

The product of its digits is 338688, while the sum is 47.

The spelling of 129377122841 in words is "one hundred twenty-nine billion, three hundred seventy-seven million, one hundred twenty-two thousand, eight hundred forty-one".