129842665680 has 240 divisors, whose sum is σ = 504246726144. Its totient is φ = 27395343360.

The previous prime is 129842665663. The next prime is 129842665691. The reversal of 129842665680 is 86566248921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a self number, because there is not a number n which added to its sum of digits gives 129842665680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271776 + ... + 577535.

Almost surely, 2^129842665680 is an apocalyptic number.

129842665680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129842665680 is an abundant number, since it is smaller than the sum of its proper divisors (374404060464).

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

129842665680 is a wasteful number, since it uses less digits than its factorization.

129842665680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849354 (or 849341 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 129842665680 in words is "one hundred twenty-nine billion, eight hundred forty-two million, six hundred sixty-five thousand, six hundred eighty".