129475531350 has 480 divisors, whose sum is σ = 416256572160. Its totient is φ = 29509920000.

The previous prime is 129475531313. The next prime is 129475531379. The reversal of 129475531350 is 53135574921.

129475531350 is a `hidden beast` number, since 1 + 2 + 9 + 47 + 553 + 1 + 3 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 129475531296 and 129475531305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 127813444 + ... + 127814456.

It is an arithmetic number, because the mean of its divisors is an integer number (867201192).

Almost surely, 2^129475531350 is an apocalyptic number.

129475531350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129475531350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208128286080).

129475531350 is an abundant number, since it is smaller than the sum of its proper divisors (286781040810).

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

129475531350 is a wasteful number, since it uses less digits than its factorization.

129475531350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218 (or 1204 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 129475531350 in words is "one hundred twenty-nine billion, four hundred seventy-five million, five hundred thirty-one thousand, three hundred fifty".