129888086487140 has 24 divisors (see below), whose sum is σ = 272766596718840. Its totient is φ = 51954926957568.

The previous prime is 129888086487127. The next prime is 129888086487161. The reversal of 129888086487140 is 41784680888921.

It can be written as a sum of positive squares in 4 ways, for example, as 15614209996324 + 114273876490816 = 3951482^2 + 10689896^2 .

It is a super-2 number, since 2×129888086487140² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (74) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15749855 + ... + 22535174.

It is an arithmetic number, because the mean of its divisors is an integer number (11365274863285).

Almost surely, 2^{129888086487140} is an apocalyptic number.

129888086487140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129888086487140 is an abundant number, since it is smaller than the sum of its proper divisors (142878510231700).

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

129888086487140 is a wasteful number, since it uses less digits than its factorization.

129888086487140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38454671 (or 38454669 counting only the distinct ones).

The product of its (nonzero) digits is 396361728, while the sum is 74.

The spelling of 129888086487140 in words is "one hundred twenty-nine trillion, eight hundred eighty-eight billion, eighty-six million, four hundred eighty-seven thousand, one hundred forty".