27760117778 has 16 divisors (see below), whose sum is σ = 42902580696. Its totient is φ = 13465491840.

The previous prime is 27760117663. The next prime is 27760117811. The reversal of 27760117778 is 87771106772.

It can be written as a sum of positive squares in 4 ways, for example, as 14152195369 + 13607922409 = 118963^2 + 116653^2 .

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, 1549601 + ... + 1567412.

Almost surely, 2^27760117778 is an apocalyptic number.

27760117778 is a deficient number, since it is larger than the sum of its proper divisors (15142462918).

27760117778 is a wasteful number, since it uses less digits than its factorization.

27760117778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117149.

The product of its (nonzero) digits is 1613472, while the sum is 53.

The spelling of 27760117778 in words is "twenty-seven billion, seven hundred sixty million, one hundred seventeen thousand, seven hundred seventy-eight".