20520014656104 has 192 divisors, whose sum is σ = 57395520000000. Its totient is φ = 6618701859840.

The previous prime is 20520014656081. The next prime is 20520014656117. The reversal of 20520014656104 is 40165641002502.

20520014656104 is a `hidden beast` number, since 2 + 0 + 5 + 20 + 0 + 14 + 6 + 5 + 610 + 4 = 666.

It is a super-2 number, since 2×20520014656104² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1874139622 + ... + 1874150570.

It is an arithmetic number, because the mean of its divisors is an integer number (298935000000).

Almost surely, 2^{20520014656104} is an apocalyptic number.

20520014656104 is a gapful number since it is divisible by the number (24) 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 20520014656104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28697760000000).

20520014656104 is an abundant number, since it is smaller than the sum of its proper divisors (36875505343896).

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

20520014656104 is a wasteful number, since it uses less digits than its factorization.

20520014656104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16128 (or 16121 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 20520014656104 its reverse (40165641002502), we get a palindrome (60685655658606).

The spelling of 20520014656104 in words is "twenty trillion, five hundred twenty billion, fourteen million, six hundred fifty-six thousand, one hundred four".