611051005505 has 4 divisors (see below), whose sum is σ = 733261206612. Its totient is φ = 488840804400.

The previous prime is 611051005489. The next prime is 611051005511. The reversal of 611051005505 is 505500150116.

It is a happy number.

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 266585309761 + 344465695744 = 516319^2 + 586912^2 .

It is not a de Polignac number, because 611051005505 - 2⁴ = 611051005489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61105100546 + ... + 61105100555.

It is an arithmetic number, because the mean of its divisors is an integer number (183315301653).

Almost surely, 2^611051005505 is an apocalyptic number.

It is an amenable number.

611051005505 is a deficient number, since it is larger than the sum of its proper divisors (122210201107).

611051005505 is a wasteful number, since it uses less digits than its factorization.

611051005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122210201106.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 611051005505 in words is "six hundred eleven billion, fifty-one million, five thousand, five hundred five".