20543280352 has 48 divisors (see below), whose sum is σ = 48941353440. Its totient is φ = 8286363648.

The previous prime is 20543280313. The next prime is 20543280371. The reversal of 20543280352 is 25308234502.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2693577 + ... + 2701192.

It is an arithmetic number, because the mean of its divisors is an integer number (1019611530).

Almost surely, 2^20543280352 is an apocalyptic number.

It is an amenable number.

20543280352 is an abundant number, since it is smaller than the sum of its proper divisors (28398073088).

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

20543280352 is a wasteful number, since it uses less digits than its factorization.

20543280352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5394803 (or 5394795 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 20543280352 in words is "twenty billion, five hundred forty-three million, two hundred eighty thousand, three hundred fifty-two".