129357898394 has 16 divisors (see below), whose sum is σ = 200842436520. Its totient is φ = 62412967680.

The previous prime is 129357898393. The next prime is 129357898403. The reversal of 129357898394 is 493898753921.

It can be written as a sum of positive squares in 4 ways, for example, as 57606240169 + 71751658225 = 240013^2 + 267865^2 .

It is not an unprimeable number, because it can be changed into a prime (129357898391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534467 + ... + 737814.

Almost surely, 2^129357898394 is an apocalyptic number.

129357898394 is a deficient number, since it is larger than the sum of its proper divisors (71484538126).

129357898394 is a wasteful number, since it uses less digits than its factorization.

129357898394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274065.

The product of its digits is 117573120, while the sum is 68.

The spelling of 129357898394 in words is "one hundred twenty-nine billion, three hundred fifty-seven million, eight hundred ninety-eight thousand, three hundred ninety-four".