65226218561 has 8 divisors (see below), whose sum is σ = 74594392320. Its totient is φ = 55870580448.

The previous prime is 65226218513. The next prime is 65226218593. The reversal of 65226218561 is 16581262256.

It is a happy number.

65226218561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65226218561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65226218261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3122756 + ... + 3143573.

It is an arithmetic number, because the mean of its divisors is an integer number (9324299040).

Almost surely, 2^65226218561 is an apocalyptic number.

It is an amenable number.

65226218561 is a deficient number, since it is larger than the sum of its proper divisors (9368173759).

65226218561 is a wasteful number, since it uses less digits than its factorization.

65226218561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267823.

The product of its digits is 345600, while the sum is 44.

The spelling of 65226218561 in words is "sixty-five billion, two hundred twenty-six million, two hundred eighteen thousand, five hundred sixty-one".