20331043552 has 48 divisors (see below), whose sum is σ = 40277865600. Its totient is φ = 10101877632.

The previous prime is 20331043547. The next prime is 20331043553. The reversal of 20331043552 is 25534013302.

It is a self number, because there is not a number n which added to its sum of digits gives 20331043552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331043553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7149843 + ... + 7152685.

It is an arithmetic number, because the mean of its divisors is an integer number (839122200).

Almost surely, 2^20331043552 is an apocalyptic number.

It is an amenable number.

20331043552 is a deficient number, since it is larger than the sum of its proper divisors (19946822048).

20331043552 is a wasteful number, since it uses less digits than its factorization.

20331043552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20331043552 its reverse (25534013302), we get a palindrome (45865056854).

The spelling of 20331043552 in words is "twenty billion, three hundred thirty-one million, forty-three thousand, five hundred fifty-two".