65161661205151 has 16 divisors (see below), whose sum is σ = 74605191268608. Its totient is φ = 55751822755200.

The previous prime is 65161661205131. The next prime is 65161661205167. The reversal of 65161661205151 is 15150216616156.

It is a cyclic number.

It is not a de Polignac number, because 65161661205151 - 2⁹ = 65161661204639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65161661205131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70209936 + ... + 71131978.

It is an arithmetic number, because the mean of its divisors is an integer number (4662824454288).

Almost surely, 2^{65161661205151} is an apocalyptic number.

65161661205151 is a deficient number, since it is larger than the sum of its proper divisors (9443530063457).

65161661205151 is a wasteful number, since it uses less digits than its factorization.

65161661205151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940302.

The product of its (nonzero) digits is 324000, while the sum is 46.

The spelling of 65161661205151 in words is "sixty-five trillion, one hundred sixty-one billion, six hundred sixty-one million, two hundred five thousand, one hundred fifty-one".