65155668911 has 4 divisors (see below), whose sum is σ = 65159304072. Its totient is φ = 65152033752.

The previous prime is 65155668881. The next prime is 65155668913. The reversal of 65155668911 is 11986655156.

It is a happy number.

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 65155668911 - 2⁶ = 65155668847 is a prime.

It is a super-2 number, since 2×65155668911² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65155668913) 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, 1790561 + ... + 1826586.

It is an arithmetic number, because the mean of its divisors is an integer number (16289826018).

Almost surely, 2^65155668911 is an apocalyptic number.

65155668911 is a deficient number, since it is larger than the sum of its proper divisors (3635161).

65155668911 is a wasteful number, since it uses less digits than its factorization.

65155668911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635160.

The product of its digits is 1944000, while the sum is 53.

The spelling of 65155668911 in words is "sixty-five billion, one hundred fifty-five million, six hundred sixty-eight thousand, nine hundred eleven".