454340142545 has 4 divisors (see below), whose sum is σ = 545208171060. Its totient is φ = 363472114032.

The previous prime is 454340142533. The next prime is 454340142547. The reversal of 454340142545 is 545241043454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545241043454 = 2 ⋅272620521727.

It can be written as a sum of positive squares in 2 ways, for example, as 111975898384 + 342364244161 = 334628^2 + 585119^2 .

It is a cyclic number.

It is not a de Polignac number, because 454340142545 - 2⁶ = 454340142481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (454340142547) 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, 45434014250 + ... + 45434014259.

It is an arithmetic number, because the mean of its divisors is an integer number (136302042765).

Almost surely, 2^454340142545 is an apocalyptic number.

It is an amenable number.

454340142545 is a deficient number, since it is larger than the sum of its proper divisors (90868028515).

454340142545 is an equidigital number, since it uses as much as digits as its factorization.

454340142545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90868028514.

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 454340142545 its reverse (545241043454), we get a palindrome (999581185999).

Subtracting 454340142545 from its reverse (545241043454), we obtain a palindrome (90900900909).

The spelling of 454340142545 in words is "four hundred fifty-four billion, three hundred forty million, one hundred forty-two thousand, five hundred forty-five".