54755375210991 has 288 divisors, whose sum is σ = 104320811212800. Its totient is φ = 27396966804480.

The previous prime is 54755375210927. The next prime is 54755375211007. The reversal of 54755375210991 is 19901257355745.

It is a happy number.

54755375210991 is a `hidden beast` number, since 5 + 4 + 7 + 5 + 537 + 5 + 2 + 1 + 0 + 9 + 91 = 666.

It is not a de Polignac number, because 54755375210991 - 2⁶ = 54755375210927 is a prime.

It is a super-2 number, since 2×54755375210991² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54755375210191) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1951562235 + ... + 1951590291.

Almost surely, 2^{54755375210991} is an apocalyptic number.

54755375210991 is a deficient number, since it is larger than the sum of its proper divisors (49565436001809).

54755375210991 is a wasteful number, since it uses less digits than its factorization.

54755375210991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28339 (or 28329 counting only the distinct ones).

The product of its (nonzero) digits is 59535000, while the sum is 63.

The spelling of 54755375210991 in words is "fifty-four trillion, seven hundred fifty-five billion, three hundred seventy-five million, two hundred ten thousand, nine hundred ninety-one".