65614620061 has 4 divisors (see below), whose sum is σ = 69474303612. Its totient is φ = 61754936512.

The previous prime is 65614620059. The next prime is 65614620077. The reversal of 65614620061 is 16002641656.

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 40963736025 + 24650884036 = 202395^2 + 157006^2 .

It is a cyclic number.

It is not a de Polignac number, because 65614620061 - 2¹ = 65614620059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65614620061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65614620031) 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, 1929841750 + ... + 1929841783.

It is an arithmetic number, because the mean of its divisors is an integer number (17368575903).

Almost surely, 2^65614620061 is an apocalyptic number.

It is an amenable number.

65614620061 is a deficient number, since it is larger than the sum of its proper divisors (3859683551).

65614620061 is a wasteful number, since it uses less digits than its factorization.

65614620061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859683550.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 65614620061 in words is "sixty-five billion, six hundred fourteen million, six hundred twenty thousand, sixty-one".