2776378887 has 12 divisors (see below), whose sum is σ = 4148612520. Its totient is φ = 1787094288.

The previous prime is 2776378883. The next prime is 2776378889. The reversal of 2776378887 is 7888736772.

2776378887 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2776378887 - 2² = 2776378883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2776378883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5318473 + ... + 5318994.

It is an arithmetic number, because the mean of its divisors is an integer number (345717710).

Almost surely, 2^2776378887 is an apocalyptic number.

2776378887 is a deficient number, since it is larger than the sum of its proper divisors (1372233633).

2776378887 is a wasteful number, since it uses less digits than its factorization.

2776378887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10637502 (or 10637499 counting only the distinct ones).

The product of its digits is 44255232, while the sum is 63.

The square root of 2776378887 is about 52691.3549550588. The cubic root of 2776378887 is about 1405.4850951775.

The spelling of 2776378887 in words is "two billion, seven hundred seventy-six million, three hundred seventy-eight thousand, eight hundred eighty-seven".