129363294438 has 96 divisors (see below), whose sum is σ = 331412170752. Its totient is φ = 35687433600.

The previous prime is 129363294433. The next prime is 129363294443. The reversal of 129363294438 is 834492363921.

129363294438 is a `hidden beast` number, since 1 + 2 + 93 + 6 + 32 + 94 + 438 = 666.

It is an interprime number because it is at equal distance from previous prime (129363294433) and next prime (129363294443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129363294433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1692978 + ... + 1767738.

It is an arithmetic number, because the mean of its divisors is an integer number (3452210112).

Almost surely, 2^129363294438 is an apocalyptic number.

129363294438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129363294438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165706085376).

129363294438 is an abundant number, since it is smaller than the sum of its proper divisors (202048876314).

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

129363294438 is a wasteful number, since it uses less digits than its factorization.

129363294438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75250 (or 75247 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 54.

It can be divided in two parts, 129363 and 294438, that added together give a square (423801 = 651²).

The spelling of 129363294438 in words is "one hundred twenty-nine billion, three hundred sixty-three million, two hundred ninety-four thousand, four hundred thirty-eight".