65765646516 has 24 divisors (see below), whose sum is σ = 154624577184. Its totient is φ = 21754539040.

The previous prime is 65765646439. The next prime is 65765646677. The reversal of 65765646516 is 61564656756.

65765646516 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-3 number, since 3×65765646516³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

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, 20916255 + ... + 20919398.

It is an arithmetic number, because the mean of its divisors is an integer number (6442690716).

Almost surely, 2^65765646516 is an apocalyptic number.

It is an amenable number.

65765646516 is an abundant number, since it is smaller than the sum of its proper divisors (88858930668).

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

65765646516 is a wasteful number, since it uses less digits than its factorization.

65765646516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41835791 (or 41835789 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 57.

The spelling of 65765646516 in words is "sixty-five billion, seven hundred sixty-five million, six hundred forty-six thousand, five hundred sixteen".