65651561010155 has 8 divisors (see below), whose sum is σ = 78815100503184. Its totient is φ = 52499097280800.

The previous prime is 65651561010149. The next prime is 65651561010209. The reversal of 65651561010155 is 55101016515656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65651561010155 - 2²⁰ = 65651559961579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2768927876 + ... + 2768951585.

It is an arithmetic number, because the mean of its divisors is an integer number (9851887562898).

Almost surely, 2^{65651561010155} is an apocalyptic number.

65651561010155 is a deficient number, since it is larger than the sum of its proper divisors (13163539493029).

65651561010155 is a wasteful number, since it uses less digits than its factorization.

65651561010155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537881837.

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 65651561010155 in words is "sixty-five trillion, six hundred fifty-one billion, five hundred sixty-one million, ten thousand, one hundred fifty-five".