611610640049 has 4 divisors (see below), whose sum is σ = 611645469540. Its totient is φ = 611575810560.

The previous prime is 611610639979. The next prime is 611610640093. The reversal of 611610640049 is 940046016116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86756757025 + 524853883024 = 294545^2 + 724468^2 .

It is a cyclic number.

It is not a de Polignac number, because 611610640049 - 2¹² = 611610635953 is a prime.

It is a super-2 number, since 2×611610640049² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 611610639994 and 611610640021.

It is not an unprimeable number, because it can be changed into a prime (611610640099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17388392 + ... + 17423529.

It is an arithmetic number, because the mean of its divisors is an integer number (152911367385).

Almost surely, 2^611610640049 is an apocalyptic number.

It is an amenable number.

611610640049 is a deficient number, since it is larger than the sum of its proper divisors (34829491).

611610640049 is a wasteful number, since it uses less digits than its factorization.

611610640049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34829490.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 611610640049 in words is "six hundred eleven billion, six hundred ten million, six hundred forty thousand, forty-nine".