65006566016 has 64 divisors (see below), whose sum is σ = 156712294080. Its totient is φ = 26221129728.

The previous prime is 65006565997. The next prime is 65006566021. The reversal of 65006566016 is 61066560056.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×65006566016² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2118650 + ... + 2149113.

It is an arithmetic number, because the mean of its divisors is an integer number (2448629595).

Almost surely, 2^65006566016 is an apocalyptic number.

It is an amenable number.

65006566016 is an abundant number, since it is smaller than the sum of its proper divisors (91705728064).

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

65006566016 is a wasteful number, since it uses less digits than its factorization.

65006566016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267801 (or 4267789 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 65006566016 in words is "sixty-five billion, six million, five hundred sixty-six thousand, sixteen".