129207947358 has 64 divisors (see below), whose sum is σ = 311595056640. Its totient is φ = 34892716032.

The previous prime is 129207947327. The next prime is 129207947387. The reversal of 129207947358 is 853749702921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 129207947298 and 129207947307.

It is a congruent number.

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, 158566 + ... + 532502.

It is an arithmetic number, because the mean of its divisors is an integer number (4868672760).

Almost surely, 2^129207947358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129207947358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155797528320).

129207947358 is an abundant number, since it is smaller than the sum of its proper divisors (182387109282).

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

129207947358 is a wasteful number, since it uses less digits than its factorization.

129207947358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374401.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 129207947358 in words is "one hundred twenty-nine billion, two hundred seven million, nine hundred forty-seven thousand, three hundred fifty-eight".