129391855482 has 32 divisors (see below), whose sum is σ = 267442882560. Its totient is φ = 41690666160.

The previous prime is 129391855469. The next prime is 129391855511. The reversal of 129391855482 is 284558193921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245148 + ... + 564695.

It is an arithmetic number, because the mean of its divisors is an integer number (8357590080).

Almost surely, 2^129391855482 is an apocalyptic number.

129391855482 is an abundant number, since it is smaller than the sum of its proper divisors (138051027078).

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

129391855482 is a wasteful number, since it uses less digits than its factorization.

129391855482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810738.

The product of its digits is 6220800, while the sum is 57.

The spelling of 129391855482 in words is "one hundred twenty-nine billion, three hundred ninety-one million, eight hundred fifty-five thousand, four hundred eighty-two".