65479625817 has 8 divisors (see below), whose sum is σ = 88411309440. Its totient is φ = 43100513040.

The previous prime is 65479625803. The next prime is 65479625839. The reversal of 65479625817 is 71852697456.

It is a happy number.

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

It is not a de Polignac number, because 65479625817 - 2¹² = 65479621721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65479625317) 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, 138142434 + ... + 138142907.

It is an arithmetic number, because the mean of its divisors is an integer number (11051413680).

Almost surely, 2^65479625817 is an apocalyptic number.

It is an amenable number.

65479625817 is a deficient number, since it is larger than the sum of its proper divisors (22931683623).

65479625817 is a wasteful number, since it uses less digits than its factorization.

65479625817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276285423.

The product of its digits is 25401600, while the sum is 60.

The spelling of 65479625817 in words is "sixty-five billion, four hundred seventy-nine million, six hundred twenty-five thousand, eight hundred seventeen".