129699446016 has 144 divisors (see below), whose sum is σ = 394773450624. Its totient is φ = 37031534592.

The previous prime is 129699446003. The next prime is 129699446029. The reversal of 129699446016 is 610644996921.

It is an interprime number because it is at equal distance from previous prime (129699446003) and next prime (129699446029).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8664010 + ... + 8678966.

It is an arithmetic number, because the mean of its divisors is an integer number (2741482296).

Almost surely, 2^129699446016 is an apocalyptic number.

129699446016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129699446016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197386725312).

129699446016 is an abundant number, since it is smaller than the sum of its proper divisors (265074004608).

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

129699446016 is a wasteful number, since it uses less digits than its factorization.

129699446016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16596 (or 16582 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 129699446016 in words is "one hundred twenty-nine billion, six hundred ninety-nine million, four hundred forty-six thousand, sixteen".