65215026061 has 4 divisors (see below), whose sum is σ = 66040532800. Its totient is φ = 64389519324.

The previous prime is 65215026043. The next prime is 65215026077. The reversal of 65215026061 is 16062051256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65215026061 - 2⁷ = 65215025933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65215026001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412753251 + ... + 412753408.

It is an arithmetic number, because the mean of its divisors is an integer number (16510133200).

Almost surely, 2^65215026061 is an apocalyptic number.

It is an amenable number.

65215026061 is a deficient number, since it is larger than the sum of its proper divisors (825506739).

65215026061 is an equidigital number, since it uses as much as digits as its factorization.

65215026061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825506738.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 65215026061 in words is "sixty-five billion, two hundred fifteen million, twenty-six thousand, sixty-one".