2780708347378 has 16 divisors (see below), whose sum is σ = 4495809381336. Its totient is φ = 1282290739200.

The previous prime is 2780708347331. The next prime is 2780708347427. The reversal of 2780708347378 is 8737438070872.

It can be written as a sum of positive squares in 4 ways, for example, as 2549013412969 + 231694934409 = 1596563^2 + 481347^2 .

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, 46349173 + ... + 46409128.

Almost surely, 2^{2780708347378} is an apocalyptic number.

2780708347378 is a deficient number, since it is larger than the sum of its proper divisors (1715101033958).

2780708347378 is a wasteful number, since it uses less digits than its factorization.

2780708347378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92759469.

The product of its (nonzero) digits is 88510464, while the sum is 64.

The spelling of 2780708347378 in words is "two trillion, seven hundred eighty billion, seven hundred eight million, three hundred forty-seven thousand, three hundred seventy-eight".