20554322012 has 24 divisors (see below), whose sum is σ = 41142161760. Its totient is φ = 8801812800.

The previous prime is 20554321993. The next prime is 20554322017. The reversal of 20554322012 is 21022345502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554322017) 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, 264239 + ... + 333062.

It is an arithmetic number, because the mean of its divisors is an integer number (1714256740).

Almost surely, 2^20554322012 is an apocalyptic number.

It is an amenable number.

20554322012 is an abundant number, since it is smaller than the sum of its proper divisors (20587839748).

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

20554322012 is a wasteful number, since it uses less digits than its factorization.

20554322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598541 (or 598539 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20554322012 its reverse (21022345502), we get a palindrome (41576667514).

The spelling of 20554322012 in words is "twenty billion, five hundred fifty-four million, three hundred twenty-two thousand, twelve".