65045776521 has 12 divisors (see below), whose sum is σ = 95328796976. Its totient is φ = 39421682520.

The previous prime is 65045776493. The next prime is 65045776529. The reversal of 65045776521 is 12567754056.

It is not a de Polignac number, because 65045776521 - 2⁶ = 65045776457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65045776529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89594371 + ... + 89595096.

Almost surely, 2^65045776521 is an apocalyptic number.

It is an amenable number.

65045776521 is a deficient number, since it is larger than the sum of its proper divisors (30283020455).

65045776521 is a wasteful number, since it uses less digits than its factorization.

65045776521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179189492 (or 179189481 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 65045776521 in words is "sixty-five billion, forty-five million, seven hundred seventy-six thousand, five hundred twenty-one".