117854524465 has 4 divisors (see below), whose sum is σ = 141425429364. Its totient is φ = 94283619568.

The previous prime is 117854524441. The next prime is 117854524481. The reversal of 117854524465 is 564425458711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42936812944 + 74917711521 = 207212^2 + 273711^2 .

It is a cyclic number.

It is not a de Polignac number, because 117854524465 - 2⁹ = 117854523953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11785452442 + ... + 11785452451.

It is an arithmetic number, because the mean of its divisors is an integer number (35356357341).

Almost surely, 2^117854524465 is an apocalyptic number.

It is an amenable number.

117854524465 is a deficient number, since it is larger than the sum of its proper divisors (23570904899).

117854524465 is an equidigital number, since it uses as much as digits as its factorization.

117854524465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23570904898.

The product of its digits is 5376000, while the sum is 52.

The spelling of 117854524465 in words is "one hundred seventeen billion, eight hundred fifty-four million, five hundred twenty-four thousand, four hundred sixty-five".