561501065000 has 40 divisors (see below), whose sum is σ = 1315597007010. Its totient is φ = 224600424000.

The previous prime is 561501064991. The next prime is 561501065017. The reversal of 561501065000 is 560105165.

It can be written as a sum of positive squares in 5 ways, for example, as 105387233956 + 456113831044 = 324634^2 + 675362^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×561501065000² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 56145107 + ... + 56155106.

Almost surely, 2^561501065000 is an apocalyptic number.

561501065000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561501065000 is an abundant number, since it is smaller than the sum of its proper divisors (754095942010).

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

561501065000 is a wasteful number, since it uses less digits than its factorization.

561501065000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112300239 (or 112300220 counting only the distinct ones).

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

The spelling of 561501065000 in words is "five hundred sixty-one billion, five hundred one million, sixty-five thousand".