198706887051 has 8 divisors (see below), whose sum is σ = 267287140560. Its totient is φ = 131298945792.

The previous prime is 198706887019. The next prime is 198706887053. The reversal of 198706887051 is 150788607891.

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

It is not a de Polignac number, because 198706887051 - 2⁵ = 198706887019 is a prime.

It is a super-2 number, since 2×198706887051² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198706887053) 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, 293077666 + ... + 293078343.

It is an arithmetic number, because the mean of its divisors is an integer number (33410892570).

Almost surely, 2^198706887051 is an apocalyptic number.

198706887051 is a deficient number, since it is larger than the sum of its proper divisors (68580253509).

198706887051 is a wasteful number, since it uses less digits than its factorization.

198706887051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586156125.

The product of its (nonzero) digits is 6773760, while the sum is 60.

The spelling of 198706887051 in words is "one hundred ninety-eight billion, seven hundred six million, eight hundred eighty-seven thousand, fifty-one".