2667776780 has 24 divisors (see below), whose sum is σ = 5665282560. Its totient is φ = 1055120000.

The previous prime is 2667776767. The next prime is 2667776809. The reversal of 2667776780 is 876777662.

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 7 ways as a sum of consecutive naturals, for example, 747596 + ... + 751155.

It is an arithmetic number, because the mean of its divisors is an integer number (236053440).

Almost surely, 2^2667776780 is an apocalyptic number.

2667776780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2667776780 is an abundant number, since it is smaller than the sum of its proper divisors (2997505780).

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

2667776780 is a wasteful number, since it uses less digits than its factorization.

2667776780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498849 (or 1498847 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 56.

The square root of 2667776780 is about 51650.5254571529. The cubic root of 2667776780 is about 1386.9149494043.

The spelling of 2667776780 in words is "two billion, six hundred sixty-seven million, seven hundred seventy-six thousand, seven hundred eighty".