199498797153693 has 12 divisors (see below), whose sum is σ = 294866439204480. Its totient is φ = 129906193495176.

The previous prime is 199498797153637. The next prime is 199498797153697. The reversal of 199498797153693 is 396351797894991.

199498797153693 is a `hidden beast` number, since 1 + 9 + 9 + 498 + 7 + 9 + 7 + 1 + 53 + 69 + 3 = 666.

It is not a de Polignac number, because 199498797153693 - 2⁸ = 199498797153437 is a prime.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 257750383533 + ... + 257750384306.

It is an arithmetic number, because the mean of its divisors is an integer number (24572203267040).

Almost surely, 2^{199498797153693} is an apocalyptic number.

It is an amenable number.

199498797153693 is a deficient number, since it is larger than the sum of its proper divisors (95367642050787).

199498797153693 is a wasteful number, since it uses less digits than its factorization.

199498797153693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515500767888 (or 515500767885 counting only the distinct ones).

The product of its digits is 24998984640, while the sum is 90.

The spelling of 199498797153693 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-three".