199492743156101 has 8 divisors (see below), whose sum is σ = 200408734925784. Its totient is φ = 198577834762240.

The previous prime is 199492743156079. The next prime is 199492743156139. The reversal of 199492743156101 is 101651347294991.

It is a Cunningham number, because it is equal to 14124190²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 165445809905476 + 34046933250625 = 12862574^2 + 5834975^2 .

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 199492743156101 - 2²² = 199492738961797 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 (199492743156901) 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, 270474830 + ... + 271211391.

It is an arithmetic number, because the mean of its divisors is an integer number (25051091865723).

Almost surely, 2^{199492743156101} is an apocalyptic number.

It is an amenable number.

199492743156101 is a deficient number, since it is larger than the sum of its proper divisors (915991769683).

199492743156101 is a wasteful number, since it uses less digits than its factorization.

199492743156101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541687911.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 199492743156101 in words is "one hundred ninety-nine trillion, four hundred ninety-two billion, seven hundred forty-three million, one hundred fifty-six thousand, one hundred one".