2787979825155 has 32 divisors (see below), whose sum is σ = 5098108345344. Its totient is φ = 1274483039616.

The previous prime is 2787979825153. The next prime is 2787979825181. The reversal of 2787979825155 is 5515289797872.

It is not a de Polignac number, because 2787979825155 - 2¹ = 2787979825153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2787979825153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6936889 + ... + 7327781.

It is an arithmetic number, because the mean of its divisors is an integer number (159315885792).

Almost surely, 2^{2787979825155} is an apocalyptic number.

2787979825155 is a deficient number, since it is larger than the sum of its proper divisors (2310128520189).

2787979825155 is a wasteful number, since it uses less digits than its factorization.

2787979825155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458835.

The product of its digits is 889056000, while the sum is 75.

The spelling of 2787979825155 in words is "two trillion, seven hundred eighty-seven billion, nine hundred seventy-nine million, eight hundred twenty-five thousand, one hundred fifty-five".