1650101000561 has 4 divisors (see below), whose sum is σ = 1777031846772. Its totient is φ = 1523170154352.

The previous prime is 1650101000531. The next prime is 1650101000621. The reversal of 1650101000561 is 1650001010561.

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 574564000000 + 1075537000561 = 758000^2 + 1037081^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650101000561 - 2¹⁴ = 1650100984177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1650101000561.

It is not an unprimeable number, because it can be changed into a prime (1650101000531) 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, 63465423086 + ... + 63465423111.

It is an arithmetic number, because the mean of its divisors is an integer number (444257961693).

Almost surely, 2^{1650101000561} is an apocalyptic number.

It is an amenable number.

1650101000561 is a deficient number, since it is larger than the sum of its proper divisors (126930846211).

1650101000561 is a wasteful number, since it uses less digits than its factorization.

1650101000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126930846210.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 1650101000561 in words is "one trillion, six hundred fifty billion, one hundred one million, five hundred sixty-one", and thus it is an aban number.