53453966945 has 4 divisors (see below), whose sum is σ = 64144760340. Its totient is φ = 42763173552.

The previous prime is 53453966899. The next prime is 53453966953. The reversal of 53453966945 is 54966935435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54966935435 = 5 ⋅10993387087.

It can be written as a sum of positive squares in 2 ways, for example, as 9969623104 + 43484343841 = 99848^2 + 208529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53453966945 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5345396690 + ... + 5345396699.

It is an arithmetic number, because the mean of its divisors is an integer number (16036190085).

Almost surely, 2^53453966945 is an apocalyptic number.

It is an amenable number.

53453966945 is a deficient number, since it is larger than the sum of its proper divisors (10690793395).

53453966945 is a wasteful number, since it uses less digits than its factorization.

53453966945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10690793394.

The product of its digits is 52488000, while the sum is 59.

The spelling of 53453966945 in words is "fifty-three billion, four hundred fifty-three million, nine hundred sixty-six thousand, nine hundred forty-five".