65011555155664 has 20 divisors (see below), whose sum is σ = 135649110277156. Its totient is φ = 30005333148672.

The previous prime is 65011555155641. The next prime is 65011555155667. The reversal of 65011555155664 is 46655155511056.

It can be written as a sum of positive squares in 2 ways, for example, as 21867781690000 + 43143773465664 = 4676300^2 + 6568392^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65011555155667) 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, 156277776609 + ... + 156277777024.

Almost surely, 2^{65011555155664} is an apocalyptic number.

It is an amenable number.

65011555155664 is an abundant number, since it is smaller than the sum of its proper divisors (70637555121492).

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

65011555155664 is a wasteful number, since it uses less digits than its factorization.

65011555155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312555553654 (or 312555553648 counting only the distinct ones).

The product of its (nonzero) digits is 13500000, while the sum is 55.

The spelling of 65011555155664 in words is "sixty-five trillion, eleven billion, five hundred fifty-five million, one hundred fifty-five thousand, six hundred sixty-four".