65607812993 has 2 divisors, whose sum is σ = 65607812994. Its totient is φ = 65607812992.

The previous prime is 65607812873. The next prime is 65607813119. The reversal of 65607812993 is 39921870656.

It is a happy number.

65607812993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61519873024 + 4087939969 = 248032^2 + 63937^2 .

It is a cyclic number.

It is not a de Polignac number, because 65607812993 - 2¹² = 65607808897 is a prime.

It is not a weakly prime, because it can be changed into another prime (65607812093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32803906496 + 32803906497.

It is an arithmetic number, because the mean of its divisors is an integer number (32803906497).

Almost surely, 2^65607812993 is an apocalyptic number.

It is an amenable number.

65607812993 is a deficient number, since it is larger than the sum of its proper divisors (1).

65607812993 is an equidigital number, since it uses as much as digits as its factorization.

65607812993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 65607812993 in words is "sixty-five billion, six hundred seven million, eight hundred twelve thousand, nine hundred ninety-three".