65590930090 has 48 divisors (see below), whose sum is σ = 142075247400. Its totient is φ = 21712854912.

The previous prime is 65590930073. The next prime is 65590930091. The reversal of 65590930090 is 9003909556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 49578811569 + 16012118521 = 222663^2 + 126539^2 .

It is a super-2 number, since 2×65590930090² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65590930090.

It is not an unprimeable number, because it can be changed into a prime (65590930091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2293705 + ... + 2322124.

Almost surely, 2^65590930090 is an apocalyptic number.

65590930090 is an abundant number, since it is smaller than the sum of its proper divisors (76484317310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65590930090 is a wasteful number, since it uses less digits than its factorization.

65590930090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615879 (or 4615872 counting only the distinct ones).

The product of its (nonzero) digits is 328050, while the sum is 46.

The spelling of 65590930090 in words is "sixty-five billion, five hundred ninety million, nine hundred thirty thousand, ninety".