51362144065 has 8 divisors (see below), whose sum is σ = 61695422568. Its totient is φ = 41049148800.

The previous prime is 51362144039. The next prime is 51362144069. The reversal of 51362144065 is 56044126315.

It can be written as a sum of positive squares in 4 ways, for example, as 8098560064 + 43263584001 = 89992^2 + 207999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51362144065 - 2⁵ = 51362144033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51362144069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5065236 + ... + 5075365.

It is an arithmetic number, because the mean of its divisors is an integer number (7711927821).

Almost surely, 2^51362144065 is an apocalyptic number.

It is an amenable number.

51362144065 is a deficient number, since it is larger than the sum of its proper divisors (10333278503).

51362144065 is a wasteful number, since it uses less digits than its factorization.

51362144065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141619.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 51362144065 in words is "fifty-one billion, three hundred sixty-two million, one hundred forty-four thousand, sixty-five".