61110055506000 has 80 divisors (see below), whose sum is σ = 197018818970688. Its totient is φ = 16296014800000.

The previous prime is 61110055505957. The next prime is 61110055506079. The reversal of 61110055506000 is 60555001116.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 5092498626 + ... + 5092510625.

Almost surely, 2^{61110055506000} is an apocalyptic number.

61110055506000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61110055506000 is an abundant number, since it is smaller than the sum of its proper divisors (135908763464688).

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

61110055506000 is a wasteful number, since it uses less digits than its factorization.

61110055506000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185009277 (or 10185009261 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 61110055506000 in words is "sixty-one trillion, one hundred ten billion, fifty-five million, five hundred six thousand".