53991316068 has 24 divisors (see below), whose sum is σ = 128114988960. Its totient is φ = 17692069440.

The previous prime is 53991316061. The next prime is 53991316079. The reversal of 53991316068 is 86061319935.

It is a self number, because there is not a number n which added to its sum of digits gives 53991316068.

It is not an unprimeable number, because it can be changed into a prime (53991316061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38128753 + ... + 38130168.

It is an arithmetic number, because the mean of its divisors is an integer number (5338124540).

Almost surely, 2^53991316068 is an apocalyptic number.

It is an amenable number.

53991316068 is an abundant number, since it is smaller than the sum of its proper divisors (74123672892).

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

53991316068 is a wasteful number, since it uses less digits than its factorization.

53991316068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76258987 (or 76258985 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 53991316068 in words is "fifty-three billion, nine hundred ninety-one million, three hundred sixteen thousand, sixty-eight".