65889605161 has 2 divisors, whose sum is σ = 65889605162. Its totient is φ = 65889605160.

The previous prime is 65889605113. The next prime is 65889605191. The reversal of 65889605161 is 16150698856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41838247936 + 24051357225 = 204544^2 + 155085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65889605161 is a prime.

It is not a weakly prime, because it can be changed into another prime (65889605191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32944802580 + 32944802581.

It is an arithmetic number, because the mean of its divisors is an integer number (32944802581).

Almost surely, 2^65889605161 is an apocalyptic number.

It is an amenable number.

65889605161 is a deficient number, since it is larger than the sum of its proper divisors (1).

65889605161 is an equidigital number, since it uses as much as digits as its factorization.

65889605161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 65889605161 in words is "sixty-five billion, eight hundred eighty-nine million, six hundred five thousand, one hundred sixty-one".