454240277653 has 4 divisors (see below), whose sum is σ = 455251949100. Its totient is φ = 453228606208.

The previous prime is 454240277599. The next prime is 454240277671. The reversal of 454240277653 is 356772042454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356772042454 = 2 ⋅178386021227.

It can be written as a sum of positive squares in 2 ways, for example, as 325153129284 + 129087148369 = 570222^2 + 359287^2 .

It is a cyclic number.

It is not a de Polignac number, because 454240277653 - 2³⁷ = 316801324181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 454240277597 and 454240277606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454240277753) 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, 505835050 + ... + 505835947.

It is an arithmetic number, because the mean of its divisors is an integer number (113812987275).

Almost surely, 2^454240277653 is an apocalyptic number.

It is an amenable number.

454240277653 is a deficient number, since it is larger than the sum of its proper divisors (1011671447).

454240277653 is a wasteful number, since it uses less digits than its factorization.

454240277653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011671446.

The product of its (nonzero) digits is 5644800, while the sum is 49.

The spelling of 454240277653 in words is "four hundred fifty-four billion, two hundred forty million, two hundred seventy-seven thousand, six hundred fifty-three".