20514211553056 has 192 divisors, whose sum is σ = 45266226969600. Its totient is φ = 9087618355200.

The previous prime is 20514211552949. The next prime is 20514211553057. The reversal of 20514211553056 is 65035511241502.

It is not an unprimeable number, because it can be changed into a prime (20514211553057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 884641110 + ... + 884664298.

It is an arithmetic number, because the mean of its divisors is an integer number (235761598800).

Almost surely, 2^{20514211553056} is an apocalyptic number.

20514211553056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20514211553056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22633113484800).

20514211553056 is an abundant number, since it is smaller than the sum of its proper divisors (24752015416544).

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

20514211553056 is a wasteful number, since it uses less digits than its factorization.

20514211553056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23803 (or 23795 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

Adding to 20514211553056 its reverse (65035511241502), we get a palindrome (85549722794558).

The spelling of 20514211553056 in words is "twenty trillion, five hundred fourteen billion, two hundred eleven million, five hundred fifty-three thousand, fifty-six".