51641245112361 has 4 divisors (see below), whose sum is σ = 68854993483152. Its totient is φ = 34427496741572.

The previous prime is 51641245112287. The next prime is 51641245112441. The reversal of 51641245112361 is 16321154214615.

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 not a de Polignac number, because 51641245112361 - 2¹⁴ = 51641245095977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51641245110361) 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, 8606874185391 + ... + 8606874185396.

It is an arithmetic number, because the mean of its divisors is an integer number (17213748370788).

Almost surely, 2^{51641245112361} is an apocalyptic number.

It is an amenable number.

51641245112361 is a deficient number, since it is larger than the sum of its proper divisors (17213748370791).

51641245112361 is a wasteful number, since it uses less digits than its factorization.

51641245112361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17213748370790.

The product of its digits is 172800, while the sum is 42.

Adding to 51641245112361 its reverse (16321154214615), we get a palindrome (67962399326976).

The spelling of 51641245112361 in words is "fifty-one trillion, six hundred forty-one billion, two hundred forty-five million, one hundred twelve thousand, three hundred sixty-one".