129539780112 has 40 divisors (see below), whose sum is σ = 342806496480. Its totient is φ = 42126757120.

The previous prime is 129539780099. The next prime is 129539780141. The reversal of 129539780112 is 211087935921.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32909562 + ... + 32913497.

It is an arithmetic number, because the mean of its divisors is an integer number (8570162412).

Almost surely, 2^129539780112 is an apocalyptic number.

129539780112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129539780112 is an abundant number, since it is smaller than the sum of its proper divisors (213266716368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129539780112 is a wasteful number, since it uses less digits than its factorization.

129539780112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65823111 (or 65823105 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 129539780112 in words is "one hundred twenty-nine billion, five hundred thirty-nine million, seven hundred eighty thousand, one hundred twelve".