20343553351000 has 128 divisors (see below), whose sum is σ = 52811740800000. Its totient is φ = 7272271536000.

The previous prime is 20343553350979. The next prime is 20343553351001. The reversal of 20343553351000 is 15335534302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343553351001) 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, 15024000 + ... + 16321999.

It is an arithmetic number, because the mean of its divisors is an integer number (412591725000).

Almost surely, 2^{20343553351000} is an apocalyptic number.

20343553351000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343553351000 is an abundant number, since it is smaller than the sum of its proper divisors (32468187449000).

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

20343553351000 is a wasteful number, since it uses less digits than its factorization.

20343553351000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31346090 (or 31346076 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 34.

Adding to 20343553351000 its reverse (15335534302), we get a palindrome (20358888885302).

The spelling of 20343553351000 in words is "twenty trillion, three hundred forty-three billion, five hundred fifty-three million, three hundred fifty-one thousand".