51186106273 has 4 divisors (see below), whose sum is σ = 51227486740. Its totient is φ = 51144725808.

The previous prime is 51186106253. The next prime is 51186106303. The reversal of 51186106273 is 37260168115.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46694023744 + 4492082529 = 216088^2 + 67023^2 .

It is a cyclic number.

It is not a de Polignac number, because 51186106273 - 2¹³ = 51186098081 is a prime.

It is a super-3 number, since 3×51186106273³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51186106243) 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, 20688378 + ... + 20690851.

It is an arithmetic number, because the mean of its divisors is an integer number (12806871685).

Almost surely, 2^51186106273 is an apocalyptic number.

It is an amenable number.

51186106273 is a deficient number, since it is larger than the sum of its proper divisors (41380467).

51186106273 is a wasteful number, since it uses less digits than its factorization.

51186106273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41380466.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 51186106273 in words is "fifty-one billion, one hundred eighty-six million, one hundred six thousand, two hundred seventy-three".