65840189245 has 4 divisors (see below), whose sum is σ = 79008227100. Its totient is φ = 52672151392.

The previous prime is 65840189231. The next prime is 65840189279. The reversal of 65840189245 is 54298104856.

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 31414726564 + 34425462681 = 177242^2 + 185541^2 .

It is a cyclic number.

It is not a de Polignac number, because 65840189245 - 2²⁷ = 65705971517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65840189192 and 65840189201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6584018920 + ... + 6584018929.

It is an arithmetic number, because the mean of its divisors is an integer number (19752056775).

Almost surely, 2^65840189245 is an apocalyptic number.

It is an amenable number.

65840189245 is a deficient number, since it is larger than the sum of its proper divisors (13168037855).

65840189245 is a wasteful number, since it uses less digits than its factorization.

65840189245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168037854.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 65840189245 in words is "sixty-five billion, eight hundred forty million, one hundred eighty-nine thousand, two hundred forty-five".