505055000061 has 16 divisors (see below), whose sum is σ = 749866912000. Its totient is φ = 335966556384.

The previous prime is 505055000059. The next prime is 505055000089. The reversal of 505055000061 is 160000550505.

505055000061 is a `hidden beast` number, since 5 + 0 + 50 + 550 + 0 + 0 + 0 + 61 = 666.

It is not a de Polignac number, because 505055000061 - 2¹ = 505055000059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505054999989 and 505055000034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505055000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20453461 + ... + 20478138.

It is an arithmetic number, because the mean of its divisors is an integer number (46866682000).

Almost surely, 2^505055000061 is an apocalyptic number.

It is an amenable number.

505055000061 is a deficient number, since it is larger than the sum of its proper divisors (244811911939).

505055000061 is a wasteful number, since it uses less digits than its factorization.

505055000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40932065 (or 40932059 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

Adding to 505055000061 its reverse (160000550505), we get a palindrome (665055550566).

The spelling of 505055000061 in words is "five hundred five billion, fifty-five million, sixty-one", and thus it is an aban number.