129351896522250 has 64 divisors (see below), whose sum is σ = 323435802508416. Its totient is φ = 34432571040000.

The previous prime is 129351896522249. The next prime is 129351896522327. The reversal of 129351896522250 is 52225698153921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152747551 + ... + 153592050.

It is an arithmetic number, because the mean of its divisors is an integer number (5053684414194).

Almost surely, 2^{129351896522250} is an apocalyptic number.

129351896522250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129351896522250 is an abundant number, since it is smaller than the sum of its proper divisors (194083905986166).

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

129351896522250 is a wasteful number, since it uses less digits than its factorization.

129351896522250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306340184 (or 306340174 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 60.

The spelling of 129351896522250 in words is "one hundred twenty-nine trillion, three hundred fifty-one billion, eight hundred ninety-six million, five hundred twenty-two thousand, two hundred fifty".