2774563693640 has 16 divisors (see below), whose sum is σ = 6242768310780. Its totient is φ = 1109825477440.

The previous prime is 2774563693637. The next prime is 2774563693661. The reversal of 2774563693640 is 463963654772.

It can be written as a sum of positive squares in 2 ways, for example, as 2704913094244 + 69650599396 = 1644662^2 + 263914^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34682046131 + ... + 34682046210.

Almost surely, 2^{2774563693640} is an apocalyptic number.

2774563693640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2774563693640 is an abundant number, since it is smaller than the sum of its proper divisors (3468204617140).

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

2774563693640 is a wasteful number, since it uses less digits than its factorization.

2774563693640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69364092352 (or 69364092348 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 62.

The spelling of 2774563693640 in words is "two trillion, seven hundred seventy-four billion, five hundred sixty-three million, six hundred ninety-three thousand, six hundred forty".