65601106017149 has 4 divisors (see below), whose sum is σ = 65602920193020. Its totient is φ = 65599291841280.

The previous prime is 65601106017137. The next prime is 65601106017151. The reversal of 65601106017149 is 94171060110656.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28149582361924 + 37451523655225 = 5305618^2 + 6119765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65601106017149 is a prime.

It is a super-2 number, since 2×65601106017149² (a number of 28 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 (65601106017449) 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, 907033694 + ... + 907106015.

It is an arithmetic number, because the mean of its divisors is an integer number (16400730048255).

Almost surely, 2^{65601106017149} is an apocalyptic number.

It is an amenable number.

65601106017149 is a deficient number, since it is larger than the sum of its proper divisors (1814175871).

65601106017149 is a wasteful number, since it uses less digits than its factorization.

65601106017149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814175870.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 65601106017149 in words is "sixty-five trillion, six hundred one billion, one hundred six million, seventeen thousand, one hundred forty-nine".