129146146873440 has 96 divisors (see below), whose sum is σ = 406840717011456. Its totient is φ = 34436402818560.

The previous prime is 129146146873439. The next prime is 129146146873451. The reversal of 129146146873440 is 44378641641921.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×129146146873440² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3593832 + ... + 16468391.

It is an arithmetic number, because the mean of its divisors is an integer number (4237924135536).

Almost surely, 2^{129146146873440} is an apocalyptic number.

129146146873440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129146146873440 is an abundant number, since it is smaller than the sum of its proper divisors (277694570138016).

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

129146146873440 is a wasteful number, since it uses less digits than its factorization.

129146146873440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20075652 (or 20075644 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 129146146873440 in words is "one hundred twenty-nine trillion, one hundred forty-six billion, one hundred forty-six million, eight hundred seventy-three thousand, four hundred forty".