65701655622061 has 4 divisors (see below), whose sum is σ = 65705293404124. Its totient is φ = 65698017840000.

The previous prime is 65701655622059. The next prime is 65701655622067. The reversal of 65701655622061 is 16022655610756.

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 28430703882025 + 37270951740036 = 5332045^2 + 6104994^2 .

It is a cyclic number.

It is not a de Polignac number, because 65701655622061 - 2¹ = 65701655622059 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 (65701655622067) 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, 1818863940 + ... + 1818900061.

It is an arithmetic number, because the mean of its divisors is an integer number (16426323351031).

Almost surely, 2^{65701655622061} is an apocalyptic number.

It is an amenable number.

65701655622061 is a deficient number, since it is larger than the sum of its proper divisors (3637782063).

65701655622061 is a wasteful number, since it uses less digits than its factorization.

65701655622061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637782062.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 65701655622061 in words is "sixty-five trillion, seven hundred one billion, six hundred fifty-five million, six hundred twenty-two thousand, sixty-one".