199108981757 has 8 divisors (see below), whose sum is σ = 229806124032. Its totient is φ = 168975090000.

The previous prime is 199108981739. The next prime is 199108981777. The reversal of 199108981757 is 757189801991.

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 199108981757 - 2³⁶ = 130389505021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199108981693 and 199108981702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199108981717) 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, 140811869 + ... + 140813282.

It is an arithmetic number, because the mean of its divisors is an integer number (28725765504).

Almost surely, 2^199108981757 is an apocalyptic number.

It is an amenable number.

199108981757 is a deficient number, since it is larger than the sum of its proper divisors (30697142275).

199108981757 is a wasteful number, since it uses less digits than its factorization.

199108981757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281625259.

The product of its (nonzero) digits is 11430720, while the sum is 65.

The spelling of 199108981757 in words is "one hundred ninety-nine billion, one hundred eight million, nine hundred eighty-one thousand, seven hundred fifty-seven".