51349705418879 has 4 divisors (see below), whose sum is σ = 58685377621584. Its totient is φ = 44014033216176.

The previous prime is 51349705418861. The next prime is 51349705418899. The reversal of 51349705418879 is 97881450794315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51349705418879 - 2³² = 51345410451583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51349705418899) 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, 3667836101342 + ... + 3667836101355.

It is an arithmetic number, because the mean of its divisors is an integer number (14671344405396).

Almost surely, 2^{51349705418879} is an apocalyptic number.

51349705418879 is a deficient number, since it is larger than the sum of its proper divisors (7335672202705).

51349705418879 is an equidigital number, since it uses as much as digits as its factorization.

51349705418879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335672202704.

The product of its (nonzero) digits is 304819200, while the sum is 71.

The spelling of 51349705418879 in words is "fifty-one trillion, three hundred forty-nine billion, seven hundred five million, four hundred eighteen thousand, eight hundred seventy-nine".