65606020501665 has 48 divisors (see below), whose sum is σ = 122114779175808. Its totient is φ = 29989543659264.

The previous prime is 65606020501663. The next prime is 65606020501669. The reversal of 65606020501665 is 56610502060656.

It is not a de Polignac number, because 65606020501665 - 2¹ = 65606020501663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65606020501661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9783349 + ... + 15064061.

It is an arithmetic number, because the mean of its divisors is an integer number (2544057899496).

Almost surely, 2^{65606020501665} is an apocalyptic number.

It is an amenable number.

65606020501665 is a deficient number, since it is larger than the sum of its proper divisors (56508758674143).

65606020501665 is a wasteful number, since it uses less digits than its factorization.

65606020501665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297638 (or 5297631 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 65606020501665 in words is "sixty-five trillion, six hundred six billion, twenty million, five hundred one thousand, six hundred sixty-five".