65506651161 has 16 divisors (see below), whose sum is σ = 99825792384. Its totient is φ = 37430072064.

The previous prime is 65506651153. The next prime is 65506651169. The reversal of 65506651161 is 16115660556.

It is an interprime number because it is at equal distance from previous prime (65506651153) and next prime (65506651169).

It is not a de Polignac number, because 65506651161 - 2³ = 65506651153 is a prime.

It is a super-2 number, since 2×65506651161² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65506651169) 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, 290241 + ... + 463953.

It is an arithmetic number, because the mean of its divisors is an integer number (6239112024).

Almost surely, 2^65506651161 is an apocalyptic number.

It is an amenable number.

65506651161 is a deficient number, since it is larger than the sum of its proper divisors (34319141223).

65506651161 is a wasteful number, since it uses less digits than its factorization.

65506651161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191680.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 65506651161 in words is "sixty-five billion, five hundred six million, six hundred fifty-one thousand, one hundred sixty-one".