65616010660 has 12 divisors (see below), whose sum is σ = 137793622428. Its totient is φ = 26246404256.

The previous prime is 65616010657. The next prime is 65616010673. The reversal of 65616010660 is 6601061656.

65616010660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34951798116 + 30664212544 = 186954^2 + 175112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640400247 + ... + 1640400286.

It is an arithmetic number, because the mean of its divisors is an integer number (11482801869).

Almost surely, 2^65616010660 is an apocalyptic number.

It is an amenable number.

65616010660 is an abundant number, since it is smaller than the sum of its proper divisors (72177611768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65616010660 is a wasteful number, since it uses less digits than its factorization.

65616010660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280800542 (or 3280800540 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 65616010660 in words is "sixty-five billion, six hundred sixteen million, ten thousand, six hundred sixty".