51266241641 has 8 divisors (see below), whose sum is σ = 54340350120. Its totient is φ = 48198627328.

The previous prime is 51266241629. The next prime is 51266241671. The reversal of 51266241641 is 14614266215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 282408025 + 50983833616 = 16805^2 + 225796^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51266241641 - 2⁶ = 51266241577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51266241595 and 51266241604.

It is not an unprimeable number, because it can be changed into a prime (51266241601) 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, 1607276 + ... + 1638861.

It is an arithmetic number, because the mean of its divisors is an integer number (6792543765).

Almost surely, 2^51266241641 is an apocalyptic number.

It is an amenable number.

51266241641 is a deficient number, since it is larger than the sum of its proper divisors (3074108479).

51266241641 is a wasteful number, since it uses less digits than its factorization.

51266241641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247083.

The product of its digits is 69120, while the sum is 38.

The spelling of 51266241641 in words is "fifty-one billion, two hundred sixty-six million, two hundred forty-one thousand, six hundred forty-one".