53678211317 has 4 divisors (see below), whose sum is σ = 53678697996. Its totient is φ = 53677724640.

The previous prime is 53678211281. The next prime is 53678211319. The reversal of 53678211317 is 71311287635.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 32946243121 + 20731968196 = 181511^2 + 143986^2 .

It is a cyclic number.

It is not a de Polignac number, because 53678211317 - 2⁸ = 53678211061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53678211319) 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, 10067 + ... + 327807.

It is an arithmetic number, because the mean of its divisors is an integer number (13419674499).

Almost surely, 2^53678211317 is an apocalyptic number.

It is an amenable number.

53678211317 is a deficient number, since it is larger than the sum of its proper divisors (486679).

53678211317 is a wasteful number, since it uses less digits than its factorization.

53678211317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486678.

The product of its digits is 211680, while the sum is 44.

The spelling of 53678211317 in words is "fifty-three billion, six hundred seventy-eight million, two hundred eleven thousand, three hundred seventeen".