13555120968 has 24 divisors (see below), whose sum is σ = 36711786150. Its totient is φ = 4518373632.

The previous prime is 13555120939. The next prime is 13555120973. The reversal of 13555120968 is 86902155531.

13555120968 is a `hidden beast` number, since 1 + 3 + 5 + 551 + 2 + 0 + 96 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9093148164 + 4461972804 = 95358^2 + 66798^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×13555120968² (a number of 21 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 94132713 + ... + 94132856.

Almost surely, 2^13555120968 is an apocalyptic number.

13555120968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13555120968 is an abundant number, since it is smaller than the sum of its proper divisors (23156665182).

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

13555120968 is a wasteful number, since it uses less digits than its factorization.

13555120968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188265581 (or 188265574 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 13555120968 in words is "thirteen billion, five hundred fifty-five million, one hundred twenty thousand, nine hundred sixty-eight".