65352077840 has 40 divisors (see below), whose sum is σ = 173649808320. Its totient is φ = 22406426496.

The previous prime is 65352077821. The next prime is 65352077863. The reversal of 65352077840 is 4877025356.

It is a tau number, because it is divible by the number of its divisors (40).

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, 58349510 + ... + 58350629.

It is an arithmetic number, because the mean of its divisors is an integer number (4341245208).

Almost surely, 2^65352077840 is an apocalyptic number.

It is an amenable number.

65352077840 is an abundant number, since it is smaller than the sum of its proper divisors (108297730480).

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

65352077840 is a wasteful number, since it uses less digits than its factorization.

65352077840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116700159 (or 116700153 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 65352077840 in words is "sixty-five billion, three hundred fifty-two million, seventy-seven thousand, eight hundred forty".