129384831950 has 48 divisors (see below), whose sum is σ = 269629131024. Its totient is φ = 45777427200.

The previous prime is 129384831949. The next prime is 129384832033. The reversal of 129384831950 is 59138483921.

It is a junction number, because it is equal to n+sod(n) for n = 129384831892 and 129384831901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3158639 + ... + 3199338.

It is an arithmetic number, because the mean of its divisors is an integer number (5617273563).

Almost surely, 2^129384831950 is an apocalyptic number.

129384831950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129384831950 is an abundant number, since it is smaller than the sum of its proper divisors (140244299074).

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

129384831950 is a wasteful number, since it uses less digits than its factorization.

129384831950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358037 (or 6358032 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 129384831950 in words is "one hundred twenty-nine billion, three hundred eighty-four million, eight hundred thirty-one thousand, nine hundred fifty".