65947885316 has 6 divisors (see below), whose sum is σ = 115408799310. Its totient is φ = 32973942656.

The previous prime is 65947885301. The next prime is 65947885363. The reversal of 65947885316 is 61358874956.

It can be written as a sum of positive squares in only one way, i.e., 65864089600 + 83795716 = 256640^2 + 9154^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8243485661 + ... + 8243485668.

It is an arithmetic number, because the mean of its divisors is an integer number (19234799885).

Almost surely, 2^65947885316 is an apocalyptic number.

It is an amenable number.

65947885316 is a deficient number, since it is larger than the sum of its proper divisors (49460913994).

65947885316 is a wasteful number, since it uses less digits than its factorization.

65947885316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16486971333 (or 16486971331 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 62.

The spelling of 65947885316 in words is "sixty-five billion, nine hundred forty-seven million, eight hundred eighty-five thousand, three hundred sixteen".