129522457050 has 144 divisors (see below), whose sum is σ = 374090297760. Its totient is φ = 29570970240.

The previous prime is 129522457033. The next prime is 129522457061. The reversal of 129522457050 is 50754225921.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129522456993 and 129522457011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6656736 + ... + 6676164.

It is an arithmetic number, because the mean of its divisors is an integer number (2597849290).

Almost surely, 2^129522457050 is an apocalyptic number.

129522457050 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 129522457050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187045148880).

129522457050 is an abundant number, since it is smaller than the sum of its proper divisors (244567840710).

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

129522457050 is a wasteful number, since it uses less digits than its factorization.

129522457050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20365 (or 20353 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 129522457050 in words is "one hundred twenty-nine billion, five hundred twenty-two million, four hundred fifty-seven thousand, fifty".