65251430441 has 8 divisors (see below), whose sum is σ = 66328341768. Its totient is φ = 64174752000.

The previous prime is 65251430437. The next prime is 65251430501. The reversal of 65251430441 is 14403415256.

It can be written as a sum of positive squares in 4 ways, for example, as 3744950416 + 61506480025 = 61196^2 + 248005^2 .

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 65251430441 - 2² = 65251430437 is a prime.

It is a super-2 number, since 2×65251430441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65251430411) 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, 560561 + ... + 666881.

It is an arithmetic number, because the mean of its divisors is an integer number (8291042721).

Almost surely, 2^65251430441 is an apocalyptic number.

65251430441 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

65251430441 is a deficient number, since it is larger than the sum of its proper divisors (1076911327).

65251430441 is a wasteful number, since it uses less digits than its factorization.

65251430441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116443.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 65251430441 its reverse (14403415256), we get a palindrome (79654845697).

The spelling of 65251430441 in words is "sixty-five billion, two hundred fifty-one million, four hundred thirty thousand, four hundred forty-one".