20554536210 has 256 divisors, whose sum is σ = 56228401152. Its totient is φ = 4775500800.

The previous prime is 20554536203. The next prime is 20554536217. The reversal of 20554536210 is 1263545502.

It is an interprime number because it is at equal distance from previous prime (20554536203) and next prime (20554536217).

It is not an unprimeable number, because it can be changed into a prime (20554536217) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 72630729 + ... + 72631011.

It is an arithmetic number, because the mean of its divisors is an integer number (219642192).

Almost surely, 2^20554536210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554536210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28114200576).

20554536210 is an abundant number, since it is smaller than the sum of its proper divisors (35673864942).

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

20554536210 is a wasteful number, since it uses less digits than its factorization.

20554536210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 20554536210 in words is "twenty billion, five hundred fifty-four million, five hundred thirty-six thousand, two hundred ten".