65618224988 has 24 divisors (see below), whose sum is σ = 115079281632. Its totient is φ = 32738494464.

The previous prime is 65618224981. The next prime is 65618225021. The reversal of 65618224988 is 88942281656.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65618224981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4840556 + ... + 4854092.

It is an arithmetic number, because the mean of its divisors is an integer number (4794970068).

Almost surely, 2^65618224988 is an apocalyptic number.

It is an amenable number.

65618224988 is a deficient number, since it is larger than the sum of its proper divisors (49461056644).

65618224988 is a wasteful number, since it uses less digits than its factorization.

65618224988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16061 (or 16059 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 59.

The spelling of 65618224988 in words is "sixty-five billion, six hundred eighteen million, two hundred twenty-four thousand, nine hundred eighty-eight".