20006555016051 has 20 divisors (see below), whose sum is σ = 29886914306832. Its totient is φ = 13337444931408.

The previous prime is 20006555016023. The next prime is 20006555016169. The reversal of 20006555016051 is 15061055560002.

It is not a de Polignac number, because 20006555016051 - 2¹¹ = 20006555014003 is a prime.

It is a super-2 number, since 2×20006555016051² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20006555015997 and 20006555016015.

It is not an unprimeable number, because it can be changed into a prime (20006555016011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1860205 + ... + 6593441.

Almost surely, 2^{20006555016051} is an apocalyptic number.

20006555016051 is a deficient number, since it is larger than the sum of its proper divisors (9880359290781).

20006555016051 is an equidigital number, since it uses as much as digits as its factorization.

20006555016051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785432 (or 4785423 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 20006555016051 in words is "twenty trillion, six billion, five hundred fifty-five million, sixteen thousand, fifty-one".