129897814690 has 64 divisors (see below), whose sum is σ = 274057344000. Its totient is φ = 44310090048.

The previous prime is 129897814667. The next prime is 129897814747. The reversal of 129897814690 is 96418798921.

It is a happy number.

129897814690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129897814690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579591 + ... + 771829.

It is an arithmetic number, because the mean of its divisors is an integer number (4282146000).

Almost surely, 2^129897814690 is an apocalyptic number.

129897814690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129897814690 is an abundant number, since it is smaller than the sum of its proper divisors (144159529310).

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

129897814690 is a wasteful number, since it uses less digits than its factorization.

129897814690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192464 (or 192450 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 64.

The spelling of 129897814690 in words is "one hundred twenty-nine billion, eight hundred ninety-seven million, eight hundred fourteen thousand, six hundred ninety".