199451116515 has 32 divisors (see below), whose sum is σ = 383905912320. Its totient is φ = 86378828544.

The previous prime is 199451116493. The next prime is 199451116559. The reversal of 199451116515 is 515611154991.

199451116515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199451116515 - 2⁹ = 199451116003 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49985754 + ... + 49989743.

It is an arithmetic number, because the mean of its divisors is an integer number (11997059760).

Almost surely, 2^199451116515 is an apocalyptic number.

199451116515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199451116515 is a deficient number, since it is larger than the sum of its proper divisors (184454795805).

199451116515 is a wasteful number, since it uses less digits than its factorization.

199451116515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99975531.

The product of its digits is 243000, while the sum is 48.

The spelling of 199451116515 in words is "one hundred ninety-nine billion, four hundred fifty-one million, one hundred sixteen thousand, five hundred fifteen".