129382530137856 has 108 divisors (see below), whose sum is σ = 374493256733232. Its totient is φ = 42959698526208.

The previous prime is 129382530137789. The next prime is 129382530137863. The reversal of 129382530137856 is 658731035283921.

129382530137856 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 8 + 2 + 530 + 13 + 7 + 85 + 6 = 666.

It is a super-2 number, since 2×129382530137856² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129382530137793 and 129382530137802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108660036 + ... + 109844291.

Almost surely, 2^{129382530137856} is an apocalyptic number.

129382530137856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129382530137856 is an abundant number, since it is smaller than the sum of its proper divisors (245110726595376).

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

129382530137856 is a wasteful number, since it uses less digits than its factorization.

129382530137856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218504606 (or 218504589 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 129382530137856 in words is "one hundred twenty-nine trillion, three hundred eighty-two billion, five hundred thirty million, one hundred thirty-seven thousand, eight hundred fifty-six".