54211947613 has 4 divisors (see below), whose sum is σ = 54212459740. Its totient is φ = 54211435488.

The previous prime is 54211947521. The next prime is 54211947631. The reversal of 54211947613 is 31674911245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31674911245 = 5 ⋅6334982249.

It can be written as a sum of positive squares in 2 ways, for example, as 36819085689 + 17392861924 = 191883^2 + 131882^2 .

It is a cyclic number.

It is not a de Polignac number, because 54211947613 - 2¹⁷ = 54211816541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54211947613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54211977613) 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, 31818 + ... + 330811.

It is an arithmetic number, because the mean of its divisors is an integer number (13553114935).

Almost surely, 2^54211947613 is an apocalyptic number.

It is an amenable number.

54211947613 is a deficient number, since it is larger than the sum of its proper divisors (512127).

54211947613 is a wasteful number, since it uses less digits than its factorization.

54211947613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512126.

The product of its digits is 181440, while the sum is 43.

The spelling of 54211947613 in words is "fifty-four billion, two hundred eleven million, nine hundred forty-seven thousand, six hundred thirteen".