129169701492 has 48 divisors (see below), whose sum is σ = 326915440320. Its totient is φ = 39458585088.

The previous prime is 129169701491. The next prime is 129169701499. The reversal of 129169701492 is 294107961921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129169701491) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2956773 + ... + 3000140.

It is an arithmetic number, because the mean of its divisors is an integer number (6810738340).

Almost surely, 2^129169701492 is an apocalyptic number.

129169701492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129169701492 is an abundant number, since it is smaller than the sum of its proper divisors (197745738828).

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

129169701492 is a wasteful number, since it uses less digits than its factorization.

129169701492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957072 (or 5957070 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 129169701492 in words is "one hundred twenty-nine billion, one hundred sixty-nine million, seven hundred one thousand, four hundred ninety-two".