51641545341313 has 4 divisors (see below), whose sum is σ = 51644754700848. Its totient is φ = 51638335981780.

The previous prime is 51641545341283. The next prime is 51641545341319. The reversal of 51641545341313 is 31314354514615.

It is a happy number.

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-51641545341313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51641545341319) 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, 1604655631 + ... + 1604687812.

It is an arithmetic number, because the mean of its divisors is an integer number (12911188675212).

Almost surely, 2^{51641545341313} is an apocalyptic number.

It is an amenable number.

51641545341313 is a deficient number, since it is larger than the sum of its proper divisors (3209359535).

51641545341313 is a wasteful number, since it uses less digits than its factorization.

51641545341313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209359534.

The product of its digits is 1296000, while the sum is 46.

Adding to 51641545341313 its reverse (31314354514615), we get a palindrome (82955899855928).

The spelling of 51641545341313 in words is "fifty-one trillion, six hundred forty-one billion, five hundred forty-five million, three hundred forty-one thousand, three hundred thirteen".