611020011 has 16 divisors (see below), whose sum is σ = 932960000. Its totient is φ = 348448608.

The previous prime is 611020009. The next prime is 611020043. The reversal of 611020011 is 110020116.

It is a happy number.

It is not a de Polignac number, because 611020011 - 2¹ = 611020009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (611020061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18676 + ... + 39633.

It is an arithmetic number, because the mean of its divisors is an integer number (58310000).

Almost surely, 2^611020011 is an apocalyptic number.

611020011 is a deficient number, since it is larger than the sum of its proper divisors (321939989).

611020011 is a wasteful number, since it uses less digits than its factorization.

611020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58818.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 611020011 is about 24718.8189645056. The cubic root of 611020011 is about 848.5650580650.

Adding to 611020011 its reverse (110020116), we get a palindrome (721040127).

The spelling of 611020011 in words is "six hundred eleven million, twenty thousand, eleven".