1011650561101 has 4 divisors (see below), whose sum is σ = 1011661842204. Its totient is φ = 1011639280000.

The previous prime is 1011650561083. The next prime is 1011650561111.

1011650561101 is nontrivially palindromic in base 10.

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 227538540100 + 784112021001 = 477010^2 + 885501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011650561101 - 2¹⁷ = 1011650430029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011650561101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011650561111) 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, 5504950 + ... + 5685751.

It is an arithmetic number, because the mean of its divisors is an integer number (252915460551).

Almost surely, 2^{1011650561101} is an apocalyptic number.

It is an amenable number.

1011650561101 is a deficient number, since it is larger than the sum of its proper divisors (11281103).

1011650561101 is an equidigital number, since it uses as much as digits as its factorization.

1011650561101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11281102.

The product of its (nonzero) digits is 900, while the sum is 28.

It can be divided in two parts, 1011650 and 561101, that added together give a palindrome (1572751).

The spelling of 1011650561101 in words is "one trillion, eleven billion, six hundred fifty million, five hundred sixty-one thousand, one hundred one".