129288881252860 has 24 divisors (see below), whose sum is σ = 310293315007200. Its totient is φ = 44327616429504.

The previous prime is 129288881252851. The next prime is 129288881252941. The reversal of 129288881252860 is 68252188882921.

It is a super-2 number, since 2×129288881252860² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is a self number, because there is not a number n which added to its sum of digits gives 129288881252860.

It is a congruent number.

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, 461746004335 + ... + 461746004614.

It is an arithmetic number, because the mean of its divisors is an integer number (12928888125300).

Almost surely, 2^{129288881252860} is an apocalyptic number.

129288881252860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129288881252860 is an abundant number, since it is smaller than the sum of its proper divisors (181004433754340).

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

129288881252860 is a wasteful number, since it uses less digits than its factorization.

129288881252860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923492008965 (or 923492008963 counting only the distinct ones).

The product of its (nonzero) digits is 141557760, while the sum is 70.

The spelling of 129288881252860 in words is "one hundred twenty-nine trillion, two hundred eighty-eight billion, eight hundred eighty-one million, two hundred fifty-two thousand, eight hundred sixty".