65645014624 has 36 divisors (see below), whose sum is σ = 150338809404. Its totient is φ = 28133577024.

The previous prime is 65645014619. The next prime is 65645014637. The reversal of 65645014624 is 42641054656.

It is a super-2 number, since 2×65645014624² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20931154 + ... + 20934289.

It is an arithmetic number, because the mean of its divisors is an integer number (4176078039).

Almost surely, 2^65645014624 is an apocalyptic number.

It is an amenable number.

65645014624 is an abundant number, since it is smaller than the sum of its proper divisors (84693794780).

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

65645014624 is a wasteful number, since it uses less digits than its factorization.

65645014624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41865467 (or 41865452 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 65645014624 in words is "sixty-five billion, six hundred forty-five million, fourteen thousand, six hundred twenty-four".