51802861326383 has 4 divisors (see below), whose sum is σ = 51854820064920. Its totient is φ = 51750902587848.

The previous prime is 51802861326371. The next prime is 51802861326389. The reversal of 51802861326383 is 38362316820815.

It is a happy number.

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 51802861326383 - 2⁴ = 51802861326367 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 (51802861326389) 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, 25979367773 + ... + 25979369766.

It is an arithmetic number, because the mean of its divisors is an integer number (12963705016230).

Almost surely, 2^{51802861326383} is an apocalyptic number.

51802861326383 is a deficient number, since it is larger than the sum of its proper divisors (51958738537).

51802861326383 is an equidigital number, since it uses as much as digits as its factorization.

51802861326383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51958738536.

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 51802861326383 in words is "fifty-one trillion, eight hundred two billion, eight hundred sixty-one million, three hundred twenty-six thousand, three hundred eighty-three".