20354002512 has 80 divisors (see below), whose sum is σ = 54498238080. Its totient is φ = 6540673536.

The previous prime is 20354002507. The next prime is 20354002517. The reversal of 20354002512 is 21520045302.

It is an interprime number because it is at equal distance from previous prime (20354002507) and next prime (20354002517).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354002517) 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 15 ways as a sum of consecutive naturals, for example, 141013 + ... + 246155.

It is an arithmetic number, because the mean of its divisors is an integer number (681227976).

Almost surely, 2^20354002512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20354002512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27249119040).

20354002512 is an abundant number, since it is smaller than the sum of its proper divisors (34144235568).

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

20354002512 is a wasteful number, since it uses less digits than its factorization.

20354002512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105300 (or 105294 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20354002512 its reverse (21520045302), we get a palindrome (41874047814).

The spelling of 20354002512 in words is "twenty billion, three hundred fifty-four million, two thousand, five hundred twelve".