129938212945 has 16 divisors (see below), whose sum is σ = 157846099968. Its totient is φ = 102677621760.

The previous prime is 129938212897. The next prime is 129938212949. The reversal of 129938212945 is 549212839921.

It is not a de Polignac number, because 129938212945 - 2³³ = 121348278353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129938212949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306576 + ... + 594865.

It is an arithmetic number, because the mean of its divisors is an integer number (9865381248).

Almost surely, 2^129938212945 is an apocalyptic number.

It is an amenable number.

129938212945 is a deficient number, since it is larger than the sum of its proper divisors (27907887023).

129938212945 is a wasteful number, since it uses less digits than its factorization.

129938212945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901800.

The product of its digits is 2799360, while the sum is 55.

The spelling of 129938212945 in words is "one hundred twenty-nine billion, nine hundred thirty-eight million, two hundred twelve thousand, nine hundred forty-five".