65385489140 has 24 divisors (see below), whose sum is σ = 140231008512. Its totient is φ = 25597723040.

The previous prime is 65385489139. The next prime is 65385489179. The reversal of 65385489140 is 4198458356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34778576 + ... + 34780455.

It is an arithmetic number, because the mean of its divisors is an integer number (5842958688).

Almost surely, 2^65385489140 is an apocalyptic number.

It is an amenable number.

65385489140 is an abundant number, since it is smaller than the sum of its proper divisors (74845519372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65385489140 is a wasteful number, since it uses less digits than its factorization.

65385489140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69559087 (or 69559085 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 65385489140 in words is "sixty-five billion, three hundred eighty-five million, four hundred eighty-nine thousand, one hundred forty".