65665156555061 has 8 divisors (see below), whose sum is σ = 78995677058880. Its totient is φ = 53322082014528.

The previous prime is 65665156555057. The next prime is 65665156555151. The reversal of 65665156555061 is 16055565156656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65665156555061 - 2² = 65665156555057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65665156554985 and 65665156555003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65665156558061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246861490676 + ... + 246861490941.

It is an arithmetic number, because the mean of its divisors is an integer number (9874459632360).

Almost surely, 2^{65665156555061} is an apocalyptic number.

It is an amenable number.

65665156555061 is a deficient number, since it is larger than the sum of its proper divisors (13330520503819).

65665156555061 is a wasteful number, since it uses less digits than its factorization.

65665156555061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493722981643.

The product of its (nonzero) digits is 121500000, while the sum is 62.

The spelling of 65665156555061 in words is "sixty-five trillion, six hundred sixty-five billion, one hundred fifty-six million, five hundred fifty-five thousand, sixty-one".