27780354676 has 12 divisors (see below), whose sum is σ = 48645512608. Its totient is φ = 13881636792.

The previous prime is 27780354649. The next prime is 27780354677. The reversal of 27780354676 is 67645308772.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27780354677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127816 + ... + 2140831.

Almost surely, 2^27780354676 is an apocalyptic number.

It is an amenable number.

27780354676 is a deficient number, since it is larger than the sum of its proper divisors (20865157932).

27780354676 is a wasteful number, since it uses less digits than its factorization.

27780354676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270278 (or 4270276 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 27780354676 in words is "twenty-seven billion, seven hundred eighty million, three hundred fifty-four thousand, six hundred seventy-six".