129602990088 has 256 divisors, whose sum is σ = 423360000000. Its totient is φ = 36217186560.

The previous prime is 129602990029. The next prime is 129602990149. The reversal of 129602990088 is 880099206921.

129602990088 is a `hidden beast` number, since 1 + 29 + 602 + 9 + 9 + 0 + 0 + 8 + 8 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61744063 + ... + 61746161.

It is an arithmetic number, because the mean of its divisors is an integer number (1653750000).

Almost surely, 2^129602990088 is an apocalyptic number.

129602990088 is a gapful number since it is divisible by the number (18) 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 129602990088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211680000000).

129602990088 is an abundant number, since it is smaller than the sum of its proper divisors (293757009912).

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

129602990088 is a wasteful number, since it uses less digits than its factorization.

129602990088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4127 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 129602990088 in words is "one hundred twenty-nine billion, six hundred two million, nine hundred ninety thousand, eighty-eight".