129069381690 has 64 divisors (see below), whose sum is σ = 364431208320. Its totient is φ = 32393882880.

The previous prime is 129069381677. The next prime is 129069381691. The reversal of 129069381690 is 96183960921.

It is a super-3 number, since 3×129069381690³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129069381691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14055256 + ... + 14064435.

It is an arithmetic number, because the mean of its divisors is an integer number (5694237630).

Almost surely, 2^129069381690 is an apocalyptic number.

129069381690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129069381690 is an abundant number, since it is smaller than the sum of its proper divisors (235361826630).

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

129069381690 is a wasteful number, since it uses less digits than its factorization.

129069381690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28119724 (or 28119718 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 129069381690 in words is "one hundred twenty-nine billion, sixty-nine million, three hundred eighty-one thousand, six hundred ninety".