129497127804 has 144 divisors (see below), whose sum is σ = 361559627520. Its totient is φ = 38753406720.

The previous prime is 129497127787. The next prime is 129497127811. The reversal of 129497127804 is 408721794921.

129497127804 is a `hidden beast` number, since 1 + 29 + 497 + 127 + 8 + 0 + 4 = 666.

It is a super-2 number, since 2×129497127804² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15454464 + ... + 15462840.

Almost surely, 2^129497127804 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 129497127804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180779813760).

129497127804 is an abundant number, since it is smaller than the sum of its proper divisors (232062499716).

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

129497127804 is a wasteful number, since it uses less digits than its factorization.

129497127804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880 (or 8875 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 129497127804 in words is "one hundred twenty-nine billion, four hundred ninety-seven million, one hundred twenty-seven thousand, eight hundred four".