65609489784372 has 48 divisors (see below), whose sum is σ = 161158515960960. Its totient is φ = 20733844139008.

The previous prime is 65609489784341. The next prime is 65609489784373. The reversal of 65609489784372 is 27348798490656.

It is a super-2 number, since 2×65609489784372² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65609489784373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1051807497 + ... + 1051869872.

It is an arithmetic number, because the mean of its divisors is an integer number (3357469082520).

Almost surely, 2^{65609489784372} is an apocalyptic number.

It is an amenable number.

65609489784372 is an abundant number, since it is smaller than the sum of its proper divisors (95549026176588).

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

65609489784372 is a wasteful number, since it uses less digits than its factorization.

65609489784372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103677512 (or 2103677510 counting only the distinct ones).

The product of its (nonzero) digits is 4389396480, while the sum is 78.

The spelling of 65609489784372 in words is "sixty-five trillion, six hundred nine billion, four hundred eighty-nine million, seven hundred eighty-four thousand, three hundred seventy-two".