6211155081 has 16 divisors (see below), whose sum is σ = 8920144640. Its totient is φ = 3831604560.

The previous prime is 6211155079. The next prime is 6211155101. The reversal of 6211155081 is 1805511126.

6211155081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6211155081 - 2¹ = 6211155079 is a prime.

It is a super-2 number, since 2×6211155081² = 77156894880464233122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6211155281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1264615 + ... + 1269516.

It is an arithmetic number, because the mean of its divisors is an integer number (557509040).

Almost surely, 2^6211155081 is an apocalyptic number.

It is an amenable number.

6211155081 is a deficient number, since it is larger than the sum of its proper divisors (2708989559).

6211155081 is a wasteful number, since it uses less digits than its factorization.

6211155081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534196.

The product of its (nonzero) digits is 2400, while the sum is 30.

The square root of 6211155081 is about 78810.8817423076. The cubic root of 6211155081 is about 1838.1916583929.

The spelling of 6211155081 in words is "six billion, two hundred eleven million, one hundred fifty-five thousand, eighty-one".