2771797061388 has 90 divisors (see below), whose sum is σ = 6875876662284. Its totient is φ = 869060491392.

The previous prime is 2771797061381. The next prime is 2771797061417. The reversal of 2771797061388 is 8831607971772.

It is not an unprimeable number, because it can be changed into a prime (2771797061381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1666744245 + ... + 1666745907.

Almost surely, 2^{2771797061388} 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 2771797061388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3437938331142).

2771797061388 is an abundant number, since it is smaller than the sum of its proper divisors (4104079600896).

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

2771797061388 is an frugal number, since it uses more digits than its factorization.

2771797061388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 66.

The spelling of 2771797061388 in words is "two trillion, seven hundred seventy-one billion, seven hundred ninety-seven million, sixty-one thousand, three hundred eighty-eight".