20331301055556 has 12 divisors (see below), whose sum is σ = 47439702462992. Its totient is φ = 6777100351848.

The previous prime is 20331301055531. The next prime is 20331301055573. The reversal of 20331301055556 is 65555010313302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20331301055556² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847137543970 + ... + 847137543993.

Almost surely, 2^{20331301055556} is an apocalyptic number.

It is an amenable number.

20331301055556 is an abundant number, since it is smaller than the sum of its proper divisors (27108401407436).

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

20331301055556 is a wasteful number, since it uses less digits than its factorization.

20331301055556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694275087970 (or 1694275087968 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 39.

Adding to 20331301055556 its reverse (65555010313302), we get a palindrome (85886311368858).

The spelling of 20331301055556 in words is "twenty trillion, three hundred thirty-one billion, three hundred one million, fifty-five thousand, five hundred fifty-six".