198078276297 has 16 divisors (see below), whose sum is σ = 288280191168. Its totient is φ = 119978134080.

The previous prime is 198078276293. The next prime is 198078276307. The reversal of 198078276297 is 792672870891.

It is not a de Polignac number, because 198078276297 - 2² = 198078276293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198078276293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1674598 + ... + 1788975.

It is an arithmetic number, because the mean of its divisors is an integer number (18017511948).

Almost surely, 2^198078276297 is an apocalyptic number.

It is an amenable number.

198078276297 is a deficient number, since it is larger than the sum of its proper divisors (90201914871).

198078276297 is a wasteful number, since it uses less digits than its factorization.

198078276297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465320.

The product of its (nonzero) digits is 42674688, while the sum is 66.

The spelling of 198078276297 in words is "one hundred ninety-eight billion, seventy-eight million, two hundred seventy-six thousand, two hundred ninety-seven".