129437331076 has 27 divisors (see below), whose sum is σ = 234633369061. Its totient is φ = 62476913744.

The previous prime is 129437331073. The next prime is 129437331077. The reversal of 129437331076 is 670133734921.

The square root of 129437331076 is 359774.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 67873796676 + 61563534400 = 260526^2 + 248120^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129437331073) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20863791 + ... + 20869993.

Almost surely, 2^129437331076 is an apocalyptic number.

129437331076 is the 359774-th square number.

It is an amenable number.

129437331076 is a deficient number, since it is larger than the sum of its proper divisors (105196037985).

129437331076 is an frugal number, since it uses more digits than its factorization.

129437331076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12468 (or 6234 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 129437331076 in words is "one hundred twenty-nine billion, four hundred thirty-seven million, three hundred thirty-one thousand, seventy-six".