129011774992 has 20 divisors (see below), whose sum is σ = 250010591056. Its totient is φ = 64492912800.

The previous prime is 129011774987. The next prime is 129011774993. The reversal of 129011774992 is 299477110921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129011774993) 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 3 ways as a sum of consecutive naturals, for example, 728634 + ... + 888217.

Almost surely, 2^129011774992 is an apocalyptic number.

It is an amenable number.

129011774992 is a deficient number, since it is larger than the sum of its proper divisors (120998816064).

129011774992 is a wasteful number, since it uses less digits than its factorization.

129011774992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621846 (or 1621840 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 52.

The spelling of 129011774992 in words is "one hundred twenty-nine billion, eleven million, seven hundred seventy-four thousand, nine hundred ninety-two".