199498797153694 has 64 divisors (see below), whose sum is σ = 329514874854912. Its totient is φ = 90174998016000.

The previous prime is 199498797153637. The next prime is 199498797153697. The reversal of 199498797153694 is 496351797894991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 199498797153599 and 199498797153608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199498797153697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880858972 + ... + 881085424.

It is an arithmetic number, because the mean of its divisors is an integer number (5148669919608).

Almost surely, 2^{199498797153694} is an apocalyptic number.

199498797153694 is a deficient number, since it is larger than the sum of its proper divisors (130016077701218).

199498797153694 is a wasteful number, since it uses less digits than its factorization.

199498797153694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232741.

The product of its digits is 33331979520, while the sum is 91.

The spelling of 199498797153694 in words is "one hundred ninety-nine trillion, four hundred ninety-eight billion, seven hundred ninety-seven million, one hundred fifty-three thousand, six hundred ninety-four".