129490673012 has 6 divisors (see below), whose sum is σ = 226608677778. Its totient is φ = 64745336504.

The previous prime is 129490672979. The next prime is 129490673029. The reversal of 129490673012 is 210376094921.

It can be written as a sum of positive squares in only one way, i.e., 129481946896 + 8726116 = 359836^2 + 2954^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16186334123 + ... + 16186334130.

It is an arithmetic number, because the mean of its divisors is an integer number (37768112963).

Almost surely, 2^129490673012 is an apocalyptic number.

It is an amenable number.

129490673012 is a deficient number, since it is larger than the sum of its proper divisors (97118004766).

129490673012 is a wasteful number, since it uses less digits than its factorization.

129490673012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32372668257 (or 32372668255 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 129490673012 in words is "one hundred twenty-nine billion, four hundred ninety million, six hundred seventy-three thousand, twelve".