505561061000 has 32 divisors (see below), whose sum is σ = 1183012885080. Its totient is φ = 202224424000.

The previous prime is 505561060943. The next prime is 505561061021. The reversal of 505561061000 is 160165505.

It can be written as a sum of positive squares in 4 ways, for example, as 85379671204 + 420181389796 = 292198^2 + 648214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252779531 + ... + 252781530.

Almost surely, 2^505561061000 is an apocalyptic number.

505561061000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505561061000 is an abundant number, since it is smaller than the sum of its proper divisors (677451824080).

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

505561061000 is a wasteful number, since it uses less digits than its factorization.

505561061000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505561082 (or 505561068 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 505561061000 in words is "five hundred five billion, five hundred sixty-one million, sixty-one thousand".