65885161345 has 4 divisors (see below), whose sum is σ = 79062193620. Its totient is φ = 52708129072.

The previous prime is 65885161343. The next prime is 65885161357. The reversal of 65885161345 is 54316158856.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26438434801 + 39446726544 = 162599^2 + 198612^2 .

It is a cyclic number.

It is not a de Polignac number, because 65885161345 - 2¹ = 65885161343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65885161292 and 65885161301.

It is not an unprimeable number, because it can be changed into a prime (65885161343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6588516130 + ... + 6588516139.

It is an arithmetic number, because the mean of its divisors is an integer number (19765548405).

Almost surely, 2^65885161345 is an apocalyptic number.

It is an amenable number.

65885161345 is a deficient number, since it is larger than the sum of its proper divisors (13177032275).

65885161345 is a wasteful number, since it uses less digits than its factorization.

65885161345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13177032274.

The product of its digits is 3456000, while the sum is 52.

The spelling of 65885161345 in words is "sixty-five billion, eight hundred eighty-five million, one hundred sixty-one thousand, three hundred forty-five".