2664411778 has 16 divisors (see below), whose sum is σ = 4593084480. Its totient is φ = 1135510416.

The previous prime is 2664411769. The next prime is 2664411787. The reversal of 2664411778 is 8771144662.

It is an interprime number because it is at equal distance from previous prime (2664411769) and next prime (2664411787).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529101 + ... + 534112.

It is an arithmetic number, because the mean of its divisors is an integer number (287067780).

Almost surely, 2^2664411778 is an apocalyptic number.

2664411778 is a deficient number, since it is larger than the sum of its proper divisors (1928672702).

2664411778 is a wasteful number, since it uses less digits than its factorization.

2664411778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063401.

The product of its digits is 451584, while the sum is 46.

The square root of 2664411778 is about 51617.9404664696. The cubic root of 2664411778 is about 1386.3315753605.

The spelling of 2664411778 in words is "two billion, six hundred sixty-four million, four hundred eleven thousand, seven hundred seventy-eight".