129749180298 has 32 divisors (see below), whose sum is σ = 261522043200. Its totient is φ = 42912554880.

The previous prime is 129749180287. The next prime is 129749180317. The reversal of 129749180298 is 892081947921.

It is a happy number.

It is a super-2 number, since 2×129749180298² (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 15 ways as a sum of consecutive naturals, for example, 7339486 + ... + 7357142.

It is an arithmetic number, because the mean of its divisors is an integer number (8172563850).

Almost surely, 2^129749180298 is an apocalyptic number.

129749180298 is an abundant number, since it is smaller than the sum of its proper divisors (131772862902).

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

129749180298 is a wasteful number, since it uses less digits than its factorization.

129749180298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27142.

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 129749180298 in words is "one hundred twenty-nine billion, seven hundred forty-nine million, one hundred eighty thousand, two hundred ninety-eight".