65618225588 has 6 divisors (see below), whose sum is σ = 114831894786. Its totient is φ = 32809112792.

The previous prime is 65618225587. The next prime is 65618225611. The reversal of 65618225588 is 88552281656.

It can be written as a sum of positive squares in only one way, i.e., 53097063184 + 12521162404 = 230428^2 + 111898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65618225581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8202278195 + ... + 8202278202.

It is an arithmetic number, because the mean of its divisors is an integer number (19138649131).

Almost surely, 2^65618225588 is an apocalyptic number.

It is an amenable number.

65618225588 is a deficient number, since it is larger than the sum of its proper divisors (49213669198).

65618225588 is a wasteful number, since it uses less digits than its factorization.

65618225588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404556401 (or 16404556399 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 56.

The spelling of 65618225588 in words is "sixty-five billion, six hundred eighteen million, two hundred twenty-five thousand, five hundred eighty-eight".