2012155463117 has 4 divisors (see below), whose sum is σ = 2017920951900. Its totient is φ = 2006389974336.

The previous prime is 2012155463053. The next prime is 2012155463191. The reversal of 2012155463117 is 7113645512102.

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 720782322121 + 1291373140996 = 848989^2 + 1136386^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012155463117 - 2⁶ = 2012155463053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012155463917) 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, 2882743868 + ... + 2882744565.

It is an arithmetic number, because the mean of its divisors is an integer number (504480237975).

Almost surely, 2^{2012155463117} is an apocalyptic number.

It is an amenable number.

2012155463117 is a deficient number, since it is larger than the sum of its proper divisors (5765488783).

2012155463117 is an equidigital number, since it uses as much as digits as its factorization.

2012155463117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765488782.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 2012155463117 in words is "two trillion, twelve billion, one hundred fifty-five million, four hundred sixty-three thousand, one hundred seventeen".