129997059848640 has 336 divisors, whose sum is σ = 479685838675680. Its totient is φ = 33470506782720.

The previous prime is 129997059848629. The next prime is 129997059848687. The reversal of 129997059848640 is 46848950799921.

129997059848640 is a `hidden beast` number, since 1 + 2 + 9 + 9 + 9 + 7 + 0 + 5 + 98 + 486 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 129997059848640.

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, 26568631 + ... + 31078710.

It is an arithmetic number, because the mean of its divisors is an integer number (1427636424630).

Almost surely, 2^{129997059848640} is an apocalyptic number.

129997059848640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129997059848640 is an abundant number, since it is smaller than the sum of its proper divisors (349688778827040).

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

129997059848640 is an equidigital number, since it uses as much as digits as its factorization.

129997059848640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57647402 (or 57647380 counting only the distinct ones).

The product of its (nonzero) digits is 2821754880, while the sum is 81.

The spelling of 129997059848640 in words is "one hundred twenty-nine trillion, nine hundred ninety-seven billion, fifty-nine million, eight hundred forty-eight thousand, six hundred forty".