65117156551616 has 28 divisors (see below), whose sum is σ = 139156615805592. Its totient is φ = 30054072254208.

The previous prime is 65117156551613. The next prime is 65117156551703. The reversal of 65117156551616 is 61615565171156.

65117156551616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65117156551616² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65117156551613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39132905750 + ... + 39132907413.

It is an arithmetic number, because the mean of its divisors is an integer number (4969879135914).

Almost surely, 2^{65117156551616} is an apocalyptic number.

It is an amenable number.

65117156551616 is an abundant number, since it is smaller than the sum of its proper divisors (74039459253976).

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

65117156551616 is a wasteful number, since it uses less digits than its factorization.

65117156551616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78265813188 (or 78265813178 counting only the distinct ones).

The product of its digits is 5670000, while the sum is 56.

The spelling of 65117156551616 in words is "sixty-five trillion, one hundred seventeen billion, one hundred fifty-six million, five hundred fifty-one thousand, six hundred sixteen".