129533443388176 has 15 divisors (see below), whose sum is σ = 250971134769511. Its totient is φ = 64766698931536.

The previous prime is 129533443388147. The next prime is 129533443388191. The reversal of 129533443388176 is 671883344335921.

The square root of 129533443388176 is 11381276.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 44102445 + ... + 46947763.

Almost surely, 2^{129533443388176} is an apocalyptic number.

129533443388176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

129533443388176 is the 11381276-th square number.

It is an amenable number.

129533443388176 is a deficient number, since it is larger than the sum of its proper divisors (121437691381335).

129533443388176 is an frugal number, since it uses more digits than its factorization.

129533443388176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690646 (or 2845321 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 67.

The spelling of 129533443388176 in words is "one hundred twenty-nine trillion, five hundred thirty-three billion, four hundred forty-three million, three hundred eighty-eight thousand, one hundred seventy-six".