65611460340 has 72 divisors (see below), whose sum is σ = 199042651080. Its totient is φ = 17494523904.

The previous prime is 65611460333. The next prime is 65611460363. The reversal of 65611460340 is 4306411656.

It is a happy number.

65611460340 is a `hidden beast` number, since 6 + 5 + 6 + 1 + 1 + 4 + 603 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6179846544 + 59431613796 = 78612^2 + 243786^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65611460295 and 65611460304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2834092 + ... + 2857148.

It is an arithmetic number, because the mean of its divisors is an integer number (2764481265).

Almost surely, 2^65611460340 is an apocalyptic number.

65611460340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65611460340 is an abundant number, since it is smaller than the sum of its proper divisors (133431190740).

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

65611460340 is a wasteful number, since it uses less digits than its factorization.

65611460340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38881 (or 38876 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 65611460340 its reverse (4306411656), we get a palindrome (69917871996).

The spelling of 65611460340 in words is "sixty-five billion, six hundred eleven million, four hundred sixty thousand, three hundred forty".