199455050555 has 4 divisors (see below), whose sum is σ = 239346060672. Its totient is φ = 159564040440.

The previous prime is 199455050533. The next prime is 199455050563. The reversal of 199455050555 is 555050554991.

It is a happy number.

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

It is not a de Polignac number, because 199455050555 - 2¹² = 199455046459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199455050497 and 199455050506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19945505051 + ... + 19945505060.

It is an arithmetic number, because the mean of its divisors is an integer number (59836515168).

Almost surely, 2^199455050555 is an apocalyptic number.

199455050555 is a deficient number, since it is larger than the sum of its proper divisors (39891010117).

199455050555 is an equidigital number, since it uses as much as digits as its factorization.

199455050555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39891010116.

The product of its (nonzero) digits is 5062500, while the sum is 53.

The spelling of 199455050555 in words is "one hundred ninety-nine billion, four hundred fifty-five million, fifty thousand, five hundred fifty-five".