65111013 has 32 divisors (see below), whose sum is σ = 105830400. Its totient is φ = 39236400.

The previous prime is 65110961. The next prime is 65111029. The reversal of 65111013 is 31011156.

65111013 is a `hidden beast` number, since 651 + 1 + 1 + 0 + 13 = 666.

It is not a de Polignac number, because 65111013 - 2¹⁴ = 65094629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65111213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62148 + ... + 63186.

It is an arithmetic number, because the mean of its divisors is an integer number (3307200).

Almost surely, 2^65111013 is an apocalyptic number.

It is an amenable number.

65111013 is a deficient number, since it is larger than the sum of its proper divisors (40719387).

65111013 is a wasteful number, since it uses less digits than its factorization.

65111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270 (or 1264 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 65111013 is about 8069.1395452055. The cubic root of 65111013 is about 402.3013445573.

Adding to 65111013 its reverse (31011156), we get a palindrome (96122169).

It can be divided in two parts, 651 and 11013, that added together give a square (11664 = 108²).

The spelling of 65111013 in words is "sixty-five million, one hundred eleven thousand, thirteen".