145541468117 has 4 divisors (see below), whose sum is σ = 145542459276. Its totient is φ = 145540476960.

The previous prime is 145541468087. The next prime is 145541468153. The reversal of 145541468117 is 711864145541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 711864145541 = 71 ⋅10026255571.

It can be written as a sum of positive squares in 2 ways, for example, as 97618128721 + 47923339396 = 312439^2 + 218914^2 .

It is a cyclic number.

It is not a de Polignac number, because 145541468117 - 2¹⁶ = 145541402581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145541468617) 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, 226688 + ... + 585209.

It is an arithmetic number, because the mean of its divisors is an integer number (36385614819).

Almost surely, 2^145541468117 is an apocalyptic number.

It is an amenable number.

145541468117 is a deficient number, since it is larger than the sum of its proper divisors (991159).

145541468117 is an equidigital number, since it uses as much as digits as its factorization.

145541468117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991158.

The product of its digits is 537600, while the sum is 47.

The spelling of 145541468117 in words is "one hundred forty-five billion, five hundred forty-one million, four hundred sixty-eight thousand, one hundred seventeen".