65975363989 has 2 divisors, whose sum is σ = 65975363990. Its totient is φ = 65975363988.

The previous prime is 65975363959. The next prime is 65975364011. The reversal of 65975363989 is 98936357956.

It is a happy number.

65975363989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43340161489 + 22635202500 = 208183^2 + 150450^2 .

It is a cyclic number.

It is not a de Polignac number, because 65975363989 - 2³¹ = 63827880341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65975363959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32987681994 + 32987681995.

It is an arithmetic number, because the mean of its divisors is an integer number (32987681995).

Almost surely, 2^65975363989 is an apocalyptic number.

It is an amenable number.

65975363989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65975363989 is an equidigital number, since it uses as much as digits as its factorization.

65975363989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 330674400, while the sum is 70.

The spelling of 65975363989 in words is "sixty-five billion, nine hundred seventy-five million, three hundred sixty-three thousand, nine hundred eighty-nine".