198071447077 has 8 divisors (see below), whose sum is σ = 226726116992. Its totient is φ = 169506464400.

The previous prime is 198071447059. The next prime is 198071447111. The reversal of 198071447077 is 770744170891.

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

It is not a de Polignac number, because 198071447077 - 2¹⁹ = 198070922789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198071447017) 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, 22417074 + ... + 22425907.

It is an arithmetic number, because the mean of its divisors is an integer number (28340764624).

Almost surely, 2^198071447077 is an apocalyptic number.

It is an amenable number.

198071447077 is a deficient number, since it is larger than the sum of its proper divisors (28654669915).

198071447077 is an equidigital number, since it uses as much as digits as its factorization.

198071447077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44843619.

The product of its (nonzero) digits is 2765952, while the sum is 55.

The spelling of 198071447077 in words is "one hundred ninety-eight billion, seventy-one million, four hundred forty-seven thousand, seventy-seven".