2056551101205 has 32 divisors (see below), whose sum is σ = 3299138664960. Its totient is φ = 1093943854080.

The previous prime is 2056551101203. The next prime is 2056551101207. The reversal of 2056551101205 is 5021011556502.

It is an interprime number because it is at equal distance from previous prime (2056551101203) and next prime (2056551101207).

It is not a de Polignac number, because 2056551101205 - 2¹ = 2056551101203 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056551101203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14939631 + ... + 15076659.

It is an arithmetic number, because the mean of its divisors is an integer number (103098083280).

Almost surely, 2^{2056551101205} is an apocalyptic number.

It is an amenable number.

2056551101205 is a deficient number, since it is larger than the sum of its proper divisors (1242587563755).

2056551101205 is a wasteful number, since it uses less digits than its factorization.

2056551101205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139661.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 2056551101205 its reverse (5021011556502), we get a palindrome (7077562657707).

The spelling of 2056551101205 in words is "two trillion, fifty-six billion, five hundred fifty-one million, one hundred one thousand, two hundred five".