20353040857352 has 16 divisors (see below), whose sum is σ = 43613658980160. Its totient is φ = 8722731795984.

The previous prime is 20353040857351. The next prime is 20353040857411. The reversal of 20353040857352 is 25375804035302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20353040857297 and 20353040857306.

It is not an unprimeable number, because it can be changed into a prime (20353040857351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181723579028 + ... + 181723579139.

It is an arithmetic number, because the mean of its divisors is an integer number (2725853686260).

Almost surely, 2^{20353040857352} is an apocalyptic number.

It is an amenable number.

20353040857352 is an abundant number, since it is smaller than the sum of its proper divisors (23260618122808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20353040857352 is a wasteful number, since it uses less digits than its factorization.

20353040857352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363447158180 (or 363447158176 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 47.

The spelling of 20353040857352 in words is "twenty trillion, three hundred fifty-three billion, forty million, eight hundred fifty-seven thousand, three hundred fifty-two".