20116167215550 has 96 divisors (see below), whose sum is σ = 57425145388800. Its totient is φ = 4564902044160.

The previous prime is 20116167215549. The next prime is 20116167215561. The reversal of 20116167215550 is 5551276161102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 68768635 + ... + 69060534.

It is an arithmetic number, because the mean of its divisors is an integer number (598178597800).

Almost surely, 2^{20116167215550} is an apocalyptic number.

20116167215550 is an abundant number, since it is smaller than the sum of its proper divisors (37308978173250).

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

20116167215550 is a wasteful number, since it uses less digits than its factorization.

20116167215550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137829330 (or 137829325 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 20116167215550 in words is "twenty trillion, one hundred sixteen billion, one hundred sixty-seven million, two hundred fifteen thousand, five hundred fifty".