2774093444721 has 27 divisors (see below), whose sum is σ = 4056489357739. Its totient is φ = 1826840602752.

The previous prime is 2774093444701. The next prime is 2774093444861. The reversal of 2774093444721 is 1274443904772.

It is a happy number.

The square root of 2774093444721 is 1665561.

It is a perfect power (a square), and thus also a powerful number.

2774093444721 is a `hidden beast` number, since 2 + 7 + 7 + 40 + 93 + 44 + 472 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2315385246321 + 458708198400 = 1521639^2 + 677280^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2774093444721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2774093444701) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 414721345 + ... + 414728033.

Almost surely, 2^{2774093444721} is an apocalyptic number.

2774093444721 is the 1665561-st square number.

2774093444721 is the 832781-st centered octagonal number.

It is an amenable number.

2774093444721 is a deficient number, since it is larger than the sum of its proper divisors (1282395913018).

2774093444721 is an frugal number, since it uses more digits than its factorization.

2774093444721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13550 (or 6775 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 54.

The spelling of 2774093444721 in words is "two trillion, seven hundred seventy-four billion, ninety-three million, four hundred forty-four thousand, seven hundred twenty-one".