199746196957546 has 4 divisors (see below), whose sum is σ = 299619295436322. Its totient is φ = 99873098478772.

The previous prime is 199746196957511. The next prime is 199746196957553. The reversal of 199746196957546 is 645759691647991.

199746196957546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 190490759781921 + 9255437175625 = 13801839^2 + 3042275^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49936549239385 + ... + 49936549239388.

Almost surely, 2^{199746196957546} is an apocalyptic number.

199746196957546 is a deficient number, since it is larger than the sum of its proper divisors (99873098478776).

199746196957546 is an equidigital number, since it uses as much as digits as its factorization.

199746196957546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99873098478775.

The product of its digits is 27776649600, while the sum is 88.

The spelling of 199746196957546 in words is "one hundred ninety-nine trillion, seven hundred forty-six billion, one hundred ninety-six million, nine hundred fifty-seven thousand, five hundred forty-six".