117645133 has 4 divisors (see below), whose sum is σ = 117825948. Its totient is φ = 117464320.

The previous prime is 117645127. The next prime is 117645137. The reversal of 117645133 is 331546711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331546711 = 919 ⋅360769.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 106234249 = 3378^2 + 10307^2 .

It is a cyclic number.

It is not a de Polignac number, because 117645133 - 2¹³ = 117636941 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117645095 and 117645104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117645137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89428 + ... + 90733.

It is an arithmetic number, because the mean of its divisors is an integer number (29456487).

Almost surely, 2^117645133 is an apocalyptic number.

It is an amenable number.

117645133 is a deficient number, since it is larger than the sum of its proper divisors (180815).

117645133 is an equidigital number, since it uses as much as digits as its factorization.

117645133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180814.

The product of its digits is 7560, while the sum is 31.

The square root of 117645133 is about 10846.4341144913. The cubic root of 117645133 is about 489.9946313448.

It can be divided in two parts, 1176451 and 33, that multiplied together give a palindrome (38822883).

The spelling of 117645133 in words is "one hundred seventeen million, six hundred forty-five thousand, one hundred thirty-three".