129583883450 has 144 divisors (see below), whose sum is σ = 284365486944. Its totient is φ = 43801430400.

The previous prime is 129583883431. The next prime is 129583883489. The reversal of 129583883450 is 54388385921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 52313612 + ... + 52316088.

It is an arithmetic number, because the mean of its divisors is an integer number (1974760326).

Almost surely, 2^129583883450 is an apocalyptic number.

129583883450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129583883450 is an abundant number, since it is smaller than the sum of its proper divisors (154781603494).

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

129583883450 is a wasteful number, since it uses less digits than its factorization.

129583883450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 129583883450 in words is "one hundred twenty-nine billion, five hundred eighty-three million, eight hundred eighty-three thousand, four hundred fifty".