65941256567 has 4 divisors (see below), whose sum is σ = 65967923520. Its totient is φ = 65914589616.

The previous prime is 65941256561. The next prime is 65941256651. The reversal of 65941256567 is 76565214956.

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

It is a cyclic number.

It is not a de Polignac number, because 65941256567 - 2¹⁸ = 65940994423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65941256561) 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, 13329767 + ... + 13334712.

It is an arithmetic number, because the mean of its divisors is an integer number (16491980880).

Almost surely, 2^65941256567 is an apocalyptic number.

65941256567 is a deficient number, since it is larger than the sum of its proper divisors (26666953).

65941256567 is a wasteful number, since it uses less digits than its factorization.

65941256567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26666952.

The product of its digits is 13608000, while the sum is 56.

The spelling of 65941256567 in words is "sixty-five billion, nine hundred forty-one million, two hundred fifty-six thousand, five hundred sixty-seven".