53427994817 has 4 divisors (see below), whose sum is σ = 53429592000. Its totient is φ = 53426397636.

The previous prime is 53427994751. The next prime is 53427994849. The reversal of 53427994817 is 71849972435.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53427994817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53427994897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747317 + ... + 815682.

It is an arithmetic number, because the mean of its divisors is an integer number (13357398000).

Almost surely, 2^53427994817 is an apocalyptic number.

It is an amenable number.

53427994817 is a deficient number, since it is larger than the sum of its proper divisors (1597183).

53427994817 is a wasteful number, since it uses less digits than its factorization.

53427994817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597182.

The product of its digits is 15240960, while the sum is 59.

The spelling of 53427994817 in words is "fifty-three billion, four hundred twenty-seven million, nine hundred ninety-four thousand, eight hundred seventeen".