198010756638129 has 8 divisors (see below), whose sum is σ = 264369677775552. Its totient is φ = 131829503296400.

The previous prime is 198010756638043. The next prime is 198010756638193. The reversal of 198010756638129 is 921836657010891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198010756638129 - 2³¹ = 198008609154481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198010756638129.

It is not an unprimeable number, because it can be changed into a prime (198010756637129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44416946322 + ... + 44416950779.

It is an arithmetic number, because the mean of its divisors is an integer number (33046209721944).

Almost surely, 2^{198010756638129} is an apocalyptic number.

It is an amenable number.

198010756638129 is a deficient number, since it is larger than the sum of its proper divisors (66358921137423).

198010756638129 is an equidigital number, since it uses as much as digits as its factorization.

198010756638129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88833897847.

The product of its (nonzero) digits is 39191040, while the sum is 66.

The spelling of 198010756638129 in words is "one hundred ninety-eight trillion, ten billion, seven hundred fifty-six million, six hundred thirty-eight thousand, one hundred twenty-nine".