129079782263488 has 28 divisors (see below), whose sum is σ = 292734506205712. Its totient is φ = 55319906684160.

The previous prime is 129079782263483. The next prime is 129079782263507. The reversal of 129079782263488 is 884362287970921.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×129079782263488² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129079782263483) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 144062256543 + ... + 144062257438.

Almost surely, 2^{129079782263488} is an apocalyptic number.

It is an amenable number.

129079782263488 is an abundant number, since it is smaller than the sum of its proper divisors (163654723942224).

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

129079782263488 is an equidigital number, since it uses as much as digits as its factorization.

129079782263488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288124514000 (or 288124513990 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 76.

The spelling of 129079782263488 in words is "one hundred twenty-nine trillion, seventy-nine billion, seven hundred eighty-two million, two hundred sixty-three thousand, four hundred eighty-eight".