2775620111012 has 108 divisors (see below), whose sum is σ = 6073404363180. Its totient is φ = 1102861799424.

The previous prime is 2775620110933. The next prime is 2775620111053. The reversal of 2775620111012 is 2101110265772.

It can be written as a sum of positive squares in 2 ways, for example, as 1459611924736 + 1316008186276 = 1208144^2 + 1147174^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14864564 + ... + 15050132.

It is an arithmetic number, because the mean of its divisors is an integer number (56235225585).

Almost surely, 2^{2775620111012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2775620111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3036702181590).

2775620111012 is an abundant number, since it is smaller than the sum of its proper divisors (3297784252168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2775620111012 is a wasteful number, since it uses less digits than its factorization.

2775620111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185738 (or 185662 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 35.

Adding to 2775620111012 its reverse (2101110265772), we get a palindrome (4876730376784).

The spelling of 2775620111012 in words is "two trillion, seven hundred seventy-five billion, six hundred twenty million, one hundred eleven thousand, twelve".