20116558779027 has 16 divisors (see below), whose sum is σ = 26917520499840. Its totient is φ = 13363320462912.

The previous prime is 20116558779011. The next prime is 20116558779029. The reversal of 20116558779027 is 72097785561102.

It is not a de Polignac number, because 20116558779027 - 2⁴ = 20116558779011 is a prime.

It is a super-2 number, since 2×20116558779027² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20116558779029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36904599 + ... + 37445727.

It is an arithmetic number, because the mean of its divisors is an integer number (1682345031240).

Almost surely, 2^{20116558779027} is an apocalyptic number.

20116558779027 is a deficient number, since it is larger than the sum of its proper divisors (6800961720813).

20116558779027 is a wasteful number, since it uses less digits than its factorization.

20116558779027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585202.

The product of its (nonzero) digits is 14817600, while the sum is 60.

The spelling of 20116558779027 in words is "twenty trillion, one hundred sixteen billion, five hundred fifty-eight million, seven hundred seventy-nine thousand, twenty-seven".