20352353420400 has 60 divisors (see below), whose sum is σ = 65195372127192. Its totient is φ = 5427294245120.

The previous prime is 20352353420381. The next prime is 20352353420401. The reversal of 20352353420400 is 402435325302.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352353420401) 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 11 ways as a sum of consecutive naturals, for example, 8480146059 + ... + 8480148458.

Almost surely, 2^{20352353420400} is an apocalyptic number.

20352353420400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20352353420400 is an abundant number, since it is smaller than the sum of its proper divisors (44843018706792).

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

20352353420400 is a wasteful number, since it uses less digits than its factorization.

20352353420400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16960294538 (or 16960294527 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 33.

Adding to 20352353420400 its reverse (402435325302), we get a palindrome (20754788745702).

The spelling of 20352353420400 in words is "twenty trillion, three hundred fifty-two billion, three hundred fifty-three million, four hundred twenty thousand, four hundred".