129976080552864 has 288 divisors, whose sum is σ = 459332954406144. Its totient is φ = 33946595389440.

The previous prime is 129976080552767. The next prime is 129976080552869. The reversal of 129976080552864 is 468255080679921.

129976080552864 is a `hidden beast` number, since 1 + 2 + 9 + 9 + 7 + 6 + 0 + 8 + 0 + 552 + 8 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 129976080552792 and 129976080552801.

It is not an unprimeable number, because it can be changed into a prime (129976080552869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21375357 + ... + 26774204.

It is an arithmetic number, because the mean of its divisors is an integer number (1594906091688).

Almost surely, 2^{129976080552864} is an apocalyptic number.

129976080552864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129976080552864 is an abundant number, since it is smaller than the sum of its proper divisors (329356873853280).

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

129976080552864 is a wasteful number, since it uses less digits than its factorization.

129976080552864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48149700 (or 48149689 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 72.

The spelling of 129976080552864 in words is "one hundred twenty-nine trillion, nine hundred seventy-six billion, eighty million, five hundred fifty-two thousand, eight hundred sixty-four".