129155068184 has 32 divisors (see below), whose sum is σ = 258807188880. Its totient is φ = 60210822144.

The previous prime is 129155068183. The next prime is 129155068219. The reversal of 129155068184 is 481860551921.

It is a super-2 number, since 2×129155068184² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129155068183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4423157 + ... + 4452260.

Almost surely, 2^129155068184 is an apocalyptic number.

It is an amenable number.

129155068184 is an abundant number, since it is smaller than the sum of its proper divisors (129652120696).

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

129155068184 is a wasteful number, since it uses less digits than its factorization.

129155068184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875547 (or 8875543 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 50.

The spelling of 129155068184 in words is "one hundred twenty-nine billion, one hundred fifty-five million, sixty-eight thousand, one hundred eighty-four".