2780864478082 has 16 divisors (see below), whose sum is σ = 4174666759800. Its totient is φ = 1389309349120.

The previous prime is 2780864478079. The next prime is 2780864478103. The reversal of 2780864478082 is 2808744680872.

It can be written as a sum of positive squares in 4 ways, for example, as 2341111144761 + 439753333321 = 1530069^2 + 663139^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12312144 + ... + 12535972.

Almost surely, 2^{2780864478082} is an apocalyptic number.

2780864478082 is a deficient number, since it is larger than the sum of its proper divisors (1393802281718).

2780864478082 is a wasteful number, since it uses less digits than its factorization.

2780864478082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228821.

The product of its (nonzero) digits is 77070336, while the sum is 64.

The spelling of 2780864478082 in words is "two trillion, seven hundred eighty billion, eight hundred sixty-four million, four hundred seventy-eight thousand, eighty-two".