129312066048 has 320 divisors, whose sum is σ = 389162949120. Its totient is φ = 37811404800.

The previous prime is 129312065963. The next prime is 129312066053. The reversal of 129312066048 is 840660213921.

It is a super-2 number, since 2×129312066048² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81894123 + ... + 81895701.

It is an arithmetic number, because the mean of its divisors is an integer number (1216134216).

Almost surely, 2^129312066048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129312066048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194581474560).

129312066048 is an abundant number, since it is smaller than the sum of its proper divisors (259850883072).

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

129312066048 is a wasteful number, since it uses less digits than its factorization.

129312066048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

Adding to 129312066048 its reverse (840660213921), we get a palindrome (969972279969).

The spelling of 129312066048 in words is "one hundred twenty-nine billion, three hundred twelve million, sixty-six thousand, forty-eight".