453878457491 has 4 divisors (see below), whose sum is σ = 453918050232. Its totient is φ = 453838864752.

The previous prime is 453878457443. The next prime is 453878457559. The reversal of 453878457491 is 194754878354.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 453878457491 - 2⁶ = 453878457427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (453878457401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19779170 + ... + 19802103.

It is an arithmetic number, because the mean of its divisors is an integer number (113479512558).

Almost surely, 2^453878457491 is an apocalyptic number.

453878457491 is a deficient number, since it is larger than the sum of its proper divisors (39592741).

453878457491 is a wasteful number, since it uses less digits than its factorization.

453878457491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39592740.

The product of its digits is 135475200, while the sum is 65.

The spelling of 453878457491 in words is "four hundred fifty-three billion, eight hundred seventy-eight million, four hundred fifty-seven thousand, four hundred ninety-one".