65354587816 has 32 divisors (see below), whose sum is σ = 140398352640. Its totient is φ = 27938547648.

The previous prime is 65354587811. The next prime is 65354587829. The reversal of 65354587816 is 61878545356.

It is not an unprimeable number, because it can be changed into a prime (65354587811) 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, 1447600 + ... + 1492063.

It is an arithmetic number, because the mean of its divisors is an integer number (4387448520).

Almost surely, 2^65354587816 is an apocalyptic number.

It is an amenable number.

65354587816 is an abundant number, since it is smaller than the sum of its proper divisors (75043764824).

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

65354587816 is a wasteful number, since it uses less digits than its factorization.

65354587816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940073 (or 2940069 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 65354587816 in words is "sixty-five billion, three hundred fifty-four million, five hundred eighty-seven thousand, eight hundred sixteen".