505055611061 has 4 divisors (see below), whose sum is σ = 516801090432. Its totient is φ = 493310131692.

The previous prime is 505055611057. The next prime is 505055611117. The reversal of 505055611061 is 160116550505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160116550505 = 5 ⋅32023310101.

It is not a de Polignac number, because 505055611061 - 2² = 505055611057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505055611031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5872739621 + ... + 5872739706.

It is an arithmetic number, because the mean of its divisors is an integer number (129200272608).

Almost surely, 2^505055611061 is an apocalyptic number.

It is an amenable number.

505055611061 is a deficient number, since it is larger than the sum of its proper divisors (11745479371).

505055611061 is a wasteful number, since it uses less digits than its factorization.

505055611061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11745479370.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 505055611061 in words is "five hundred five billion, fifty-five million, six hundred eleven thousand, sixty-one".