65506601155 has 16 divisors (see below), whose sum is σ = 80487248544. Its totient is φ = 51166241280.

The previous prime is 65506601107. The next prime is 65506601179. The reversal of 65506601155 is 55110660556.

It is not a de Polignac number, because 65506601155 - 2¹¹ = 65506599107 is a prime.

It is a super-2 number, since 2×65506601155² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827376 + ... + 903085.

It is an arithmetic number, because the mean of its divisors is an integer number (5030453034).

Almost surely, 2^65506601155 is an apocalyptic number.

65506601155 is a deficient number, since it is larger than the sum of its proper divisors (14980647389).

65506601155 is a wasteful number, since it uses less digits than its factorization.

65506601155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730646.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 65506601155 in words is "sixty-five billion, five hundred six million, six hundred one thousand, one hundred fifty-five".