20344555153197 has 32 divisors (see below), whose sum is σ = 34013885328000. Its totient is φ = 11904859854720.

The previous prime is 20344555153189. The next prime is 20344555153207. The reversal of 20344555153197 is 79135155544302.

20344555153197 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 4 + 5 + 5 + 515 + 31 + 97 = 666.

It is not a de Polignac number, because 20344555153197 - 2³ = 20344555153189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344555133197) 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, 1181029072 + ... + 1181046297.

It is an arithmetic number, because the mean of its divisors is an integer number (1062933916500).

Almost surely, 2^{20344555153197} is an apocalyptic number.

20344555153197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20344555153197 is a deficient number, since it is larger than the sum of its proper divisors (13669330174803).

20344555153197 is a wasteful number, since it uses less digits than its factorization.

20344555153197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362075418 (or 2362075412 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 54.

The spelling of 20344555153197 in words is "twenty trillion, three hundred forty-four billion, five hundred fifty-five million, one hundred fifty-three thousand, one hundred ninety-seven".