129341211784 has 8 divisors (see below), whose sum is σ = 242514772110. Its totient is φ = 64670605888.

The previous prime is 129341211763. The next prime is 129341211787. The reversal of 129341211784 is 487112143921.

It can be written as a sum of positive squares in only one way, i.e., 106681930884 + 22659280900 = 326622^2 + 150530^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 129341211784.

It is not an unprimeable number, because it can be changed into a prime (129341211787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8083825729 + ... + 8083825744.

Almost surely, 2^129341211784 is an apocalyptic number.

It is an amenable number.

129341211784 is a deficient number, since it is larger than the sum of its proper divisors (113173560326).

129341211784 is a wasteful number, since it uses less digits than its factorization.

129341211784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167651479 (or 16167651475 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The spelling of 129341211784 in words is "one hundred twenty-nine billion, three hundred forty-one million, two hundred eleven thousand, seven hundred eighty-four".