219115253097 has 12 divisors (see below), whose sum is σ = 340845949444. Its totient is φ = 134840155680.

The previous prime is 219115253089. The next prime is 219115253111. The reversal of 219115253097 is 790352511912.

219115253097 is a `hidden beast` number, since 2 + 1 + 9 + 1 + 1 + 525 + 30 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 138669843456 + 80445409641 = 372384^2 + 283629^2 .

It is not a de Polignac number, because 219115253097 - 2³ = 219115253089 is a prime.

It is a super-2 number, since 2×219115253097² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (219115253087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 936389854 + ... + 936390087.

Almost surely, 2^219115253097 is an apocalyptic number.

It is an amenable number.

219115253097 is a deficient number, since it is larger than the sum of its proper divisors (121730696347).

219115253097 is a wasteful number, since it uses less digits than its factorization.

219115253097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872779960 (or 1872779957 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 45.

The spelling of 219115253097 in words is "two hundred nineteen billion, one hundred fifteen million, two hundred fifty-three thousand, ninety-seven".