2776040640 has 112 divisors (see below), whose sum is σ = 9793284960. Its totient is φ = 740275200.

The previous prime is 2776040629. The next prime is 2776040677. The reversal of 2776040640 is 460406772.

2776040640 is a `hidden beast` number, since 2 + 7 + 7 + 6 + 0 + 4 + 0 + 640 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2776040595 and 2776040604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152011 + ... + 169290.

Almost surely, 2^2776040640 is an apocalyptic number.

2776040640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2776040640 is an abundant number, since it is smaller than the sum of its proper divisors (7017244320).

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

2776040640 is a wasteful number, since it uses less digits than its factorization.

2776040640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321327 (or 321311 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 2776040640 is about 52688.1451561924. The cubic root of 2776040640 is about 1405.4280159815.

The spelling of 2776040640 in words is "two billion, seven hundred seventy-six million, forty thousand, six hundred forty".