129842851456 has 32 divisors (see below), whose sum is σ = 264980372580. Its totient is φ = 63337973760.

The previous prime is 129842851433. The next prime is 129842851459. The reversal of 129842851456 is 654158248921.

It can be written as a sum of positive squares in 2 ways, for example, as 106678011456 + 23164840000 = 326616^2 + 152200^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 129842851397 and 129842851406.

It is not an unprimeable number, because it can be changed into a prime (129842851459) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12365451 + ... + 12375946.

Almost surely, 2^129842851456 is an apocalyptic number.

129842851456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129842851456 is an abundant number, since it is smaller than the sum of its proper divisors (135137521124).

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

129842851456 is an equidigital number, since it uses as much as digits as its factorization.

129842851456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24741452 (or 24741440 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 55.

The spelling of 129842851456 in words is "one hundred twenty-nine billion, eight hundred forty-two million, eight hundred fifty-one thousand, four hundred fifty-six".