129211467357840 has 160 divisors (see below), whose sum is σ = 460809411833856. Its totient is φ = 29338459891200.

The previous prime is 129211467357827. The next prime is 129211467357923. The reversal of 129211467357840 is 48753764112921.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254420452 + ... + 254927811.

It is a 2-persistent number, because it is pandigital, and so is 2⋅129211467357840 = 258422934715680, but 3⋅129211467357840 = 387634402073520 is not.

Almost surely, 2^{129211467357840} is an apocalyptic number.

129211467357840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129211467357840 is an abundant number, since it is smaller than the sum of its proper divisors (331597944476016).

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

129211467357840 is a wasteful number, since it uses less digits than its factorization.

129211467357840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509348437 (or 509348431 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 129211467357840 in words is "one hundred twenty-nine trillion, two hundred eleven billion, four hundred sixty-seven million, three hundred fifty-seven thousand, eight hundred forty".