129267855444 has 48 divisors (see below), whose sum is σ = 371230767488. Its totient is φ = 34092620928.

The previous prime is 129267855433. The next prime is 129267855467. The reversal of 129267855444 is 444558762921.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 59187487 + ... + 59189670.

Almost surely, 2^129267855444 is an apocalyptic number.

129267855444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129267855444 is an abundant number, since it is smaller than the sum of its proper divisors (241962912044).

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

129267855444 is a wasteful number, since it uses less digits than its factorization.

129267855444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118377184 (or 118377182 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 57.

The spelling of 129267855444 in words is "one hundred twenty-nine billion, two hundred sixty-seven million, eight hundred fifty-five thousand, four hundred forty-four".