65156116061 has 4 divisors (see below), whose sum is σ = 65732718972. Its totient is φ = 64579513152.

The previous prime is 65156116043. The next prime is 65156116063. The reversal of 65156116061 is 16061165156.

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 10356115225 + 54800000836 = 101765^2 + 234094^2 .

It is a cyclic number.

It is not a de Polignac number, because 65156116061 - 2²⁶ = 65089007197 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 (65156116063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288301286 + ... + 288301511.

It is an arithmetic number, because the mean of its divisors is an integer number (16433179743).

Almost surely, 2^65156116061 is an apocalyptic number.

It is an amenable number.

65156116061 is a deficient number, since it is larger than the sum of its proper divisors (576602911).

65156116061 is a wasteful number, since it uses less digits than its factorization.

65156116061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576602910.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 65156116061 in words is "sixty-five billion, one hundred fifty-six million, one hundred sixteen thousand, sixty-one".