129303257472 has 160 divisors (see below), whose sum is σ = 388617490800. Its totient is φ = 42673996800.

The previous prime is 129303257471. The next prime is 129303257483. The reversal of 129303257472 is 274752303921.

129303257472 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 0 + 3 + 2 + 574 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129303257471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 985429 + ... + 1108907.

Almost surely, 2^129303257472 is an apocalyptic number.

129303257472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129303257472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194308745400).

129303257472 is an abundant number, since it is smaller than the sum of its proper divisors (259314233328).

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

129303257472 is a wasteful number, since it uses less digits than its factorization.

129303257472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123606 (or 123585 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 129303257472 in words is "one hundred twenty-nine billion, three hundred three million, two hundred fifty-seven thousand, four hundred seventy-two".