129409548048 has 80 divisors (see below), whose sum is σ = 405221832000. Its totient is φ = 39215013120.

The previous prime is 129409548041. The next prime is 129409548071. The reversal of 129409548048 is 840845904921.

It is a happy number.

129409548048 is a `hidden beast` number, since 1 + 2 + 94 + 0 + 9 + 548 + 0 + 4 + 8 = 666.

It is a super-2 number, since 2×129409548048² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 129409547985 and 129409548003.

It is not an unprimeable number, because it can be changed into a prime (129409548041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13611573 + ... + 13621076.

It is an arithmetic number, because the mean of its divisors is an integer number (5065272900).

Almost surely, 2^129409548048 is an apocalyptic number.

129409548048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129409548048 is an abundant number, since it is smaller than the sum of its proper divisors (275812283952).

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

129409548048 is a wasteful number, since it uses less digits than its factorization.

129409548048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27232677 (or 27232665 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 129409548048 in words is "one hundred twenty-nine billion, four hundred nine million, five hundred forty-eight thousand, forty-eight".