65016061601651 has 4 divisors (see below), whose sum is σ = 65016459448512. Its totient is φ = 65015663754792.

The previous prime is 65016061601641. The next prime is 65016061601707. The reversal of 65016061601651 is 15610616061056.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65016061601651 - 2⁴² = 60618015090547 is a prime.

It is a super-3 number, since 3×65016061601651³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65016061601641) 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, 198678200 + ... + 199005173.

It is an arithmetic number, because the mean of its divisors is an integer number (16254114862128).

Almost surely, 2^{65016061601651} is an apocalyptic number.

65016061601651 is a deficient number, since it is larger than the sum of its proper divisors (397846861).

65016061601651 is a wasteful number, since it uses less digits than its factorization.

65016061601651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397846860.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 65016061601651 in words is "sixty-five trillion, sixteen billion, sixty-one million, six hundred one thousand, six hundred fifty-one".