199498797153695 has 16 divisors (see below), whose sum is σ = 257815840007712. Its totient is φ = 147321040187520.

The previous prime is 199498797153637. The next prime is 199498797153697. The reversal of 199498797153695 is 596351797894991.

It is a happy number.

It is not a de Polignac number, because 199498797153695 - 2¹² = 199498797149599 is a prime.

It is a super-2 number, since 2×199498797153695² (a number of 29 digits) contains 22 as substring.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 3515732 + ... + 20281961.

It is an arithmetic number, because the mean of its divisors is an integer number (16113490000482).

Almost surely, 2^{199498797153695} is an apocalyptic number.

199498797153695 is a deficient number, since it is larger than the sum of its proper divisors (58317042854017).

199498797153695 is a wasteful number, since it uses less digits than its factorization.

199498797153695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23926682.

The product of its digits is 41664974400, while the sum is 92.

The spelling of 199498797153695 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-five".