65016128 has 14 divisors (see below), whose sum is σ = 129016506. Its totient is φ = 32508032.

The previous prime is 65016121. The next prime is 65016139. The reversal of 65016128 is 82161056.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62220544 + 2795584 = 7888^2 + 1672^2 .

It is a super-2 number, since 2×65016128² = 8454193800224768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65016128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65016121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507875 + ... + 508002.

Almost surely, 2^65016128 is an apocalyptic number.

It is an amenable number.

65016128 is a deficient number, since it is larger than the sum of its proper divisors (64000378).

65016128 is a wasteful number, since it uses less digits than its factorization.

65016128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015889 (or 1015879 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 65016128 is about 8063.2579023618. The cubic root of 65016128 is about 402.1058276038.

The spelling of 65016128 in words is "sixty-five million, sixteen thousand, one hundred twenty-eight".