117453901645 has 4 divisors (see below), whose sum is σ = 140944681980. Its totient is φ = 93963121312.

The previous prime is 117453901619. The next prime is 117453901673. The reversal of 117453901645 is 546109354711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546109354711 = 29 ⋅18831357059.

It can be written as a sum of positive squares in 2 ways, for example, as 81833756356 + 35620145289 = 286066^2 + 188733^2 .

It is a cyclic number.

It is not a de Polignac number, because 117453901645 - 2⁷ = 117453901517 is a prime.

It is a super-4 number, since 4×117453901645⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 117453901595 and 117453901604.

It is a congruent 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, 11745390160 + ... + 11745390169.

It is an arithmetic number, because the mean of its divisors is an integer number (35236170495).

Almost surely, 2^117453901645 is an apocalyptic number.

It is an amenable number.

117453901645 is a deficient number, since it is larger than the sum of its proper divisors (23490780335).

117453901645 is an equidigital number, since it uses as much as digits as its factorization.

117453901645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23490780334.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 117453901645 in words is "one hundred seventeen billion, four hundred fifty-three million, nine hundred one thousand, six hundred forty-five".