54775621761717 has 16 divisors (see below), whose sum is σ = 76880991188160. Its totient is φ = 34593813032832.

The previous prime is 54775621761709. The next prime is 54775621761743. The reversal of 54775621761717 is 71716712657745.

It is not a de Polignac number, because 54775621761717 - 2³ = 54775621761709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54775621761317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16772658 + ... + 19770515.

It is an arithmetic number, because the mean of its divisors is an integer number (4805061949260).

Almost surely, 2^{54775621761717} is an apocalyptic number.

54775621761717 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

54775621761717 is a deficient number, since it is larger than the sum of its proper divisors (22105369426443).

54775621761717 is a wasteful number, since it uses less digits than its factorization.

54775621761717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36569492.

The product of its digits is 121010400, while the sum is 66.

The spelling of 54775621761717 in words is "fifty-four trillion, seven hundred seventy-five billion, six hundred twenty-one million, seven hundred sixty-one thousand, seven hundred seventeen".