65276507077 has 8 divisors (see below), whose sum is σ = 68305658616. Its totient is φ = 62313930432.

The previous prime is 65276507063. The next prime is 65276507081. The reversal of 65276507077 is 77070567256.

It can be written as a sum of positive squares in 4 ways, for example, as 10966068961 + 54310438116 = 104719^2 + 233046^2 .

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 65276507077 - 2²³ = 65268118469 is a prime.

It is a super-2 number, since 2×65276507077² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65276507377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16641718 + ... + 16645639.

It is an arithmetic number, because the mean of its divisors is an integer number (8538207327).

Almost surely, 2^65276507077 is an apocalyptic number.

It is an amenable number.

65276507077 is a deficient number, since it is larger than the sum of its proper divisors (3029151539).

65276507077 is a wasteful number, since it uses less digits than its factorization.

65276507077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33287447.

The product of its (nonzero) digits is 4321800, while the sum is 52.

The spelling of 65276507077 in words is "sixty-five billion, two hundred seventy-six million, five hundred seven thousand, seventy-seven".