65350753021 has 2 divisors, whose sum is σ = 65350753022. Its totient is φ = 65350753020.

The previous prime is 65350753009. The next prime is 65350753057. The reversal of 65350753021 is 12035705356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63711312921 + 1639440100 = 252411^2 + 40490^2 .

It is a cyclic number.

It is not a de Polignac number, because 65350753021 - 2²⁵ = 65317198589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65350753421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32675376510 + 32675376511.

It is an arithmetic number, because the mean of its divisors is an integer number (32675376511).

Almost surely, 2^65350753021 is an apocalyptic number.

It is an amenable number.

65350753021 is a deficient number, since it is larger than the sum of its proper divisors (1).

65350753021 is an equidigital number, since it uses as much as digits as its factorization.

65350753021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 37.

The spelling of 65350753021 in words is "sixty-five billion, three hundred fifty million, seven hundred fifty-three thousand, twenty-one".