117454720487751 has 24 divisors (see below), whose sum is σ = 171863557831680. Its totient is φ = 77285334808656.

The previous prime is 117454720487747. The next prime is 117454720487761. The reversal of 117454720487751 is 157784027454711.

It is a happy number.

117454720487751 is a `hidden beast` number, since 1 + 1 + 7 + 4 + 5 + 472 + 0 + 48 + 77 + 51 = 666.

It is not a de Polignac number, because 117454720487751 - 2² = 117454720487747 is a prime.

It is a super-2 number, since 2×117454720487751² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117454720487761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26388691 + ... + 30516756.

It is an arithmetic number, because the mean of its divisors is an integer number (7160981576320).

Almost surely, 2^{117454720487751} is an apocalyptic number.

117454720487751 is a deficient number, since it is larger than the sum of its proper divisors (54408837343929).

117454720487751 is a wasteful number, since it uses less digits than its factorization.

117454720487751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56908435 (or 56908432 counting only the distinct ones).

The product of its (nonzero) digits is 61465600, while the sum is 63.

The spelling of 117454720487751 in words is "one hundred seventeen trillion, four hundred fifty-four billion, seven hundred twenty million, four hundred eighty-seven thousand, seven hundred fifty-one".