27902778775 has 6 divisors (see below), whose sum is σ = 34599445712. Its totient is φ = 22322223000.

The previous prime is 27902778751. The next prime is 27902778779. The reversal of 27902778775 is 57787720972.

It is not a de Polignac number, because 27902778775 - 2¹⁹ = 27902254487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27902778779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558055551 + ... + 558055600.

Almost surely, 2^27902778775 is an apocalyptic number.

27902778775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27902778775 is a deficient number, since it is larger than the sum of its proper divisors (6696666937).

27902778775 is a wasteful number, since it uses less digits than its factorization.

27902778775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116111161 (or 1116111156 counting only the distinct ones).

The product of its (nonzero) digits is 24202080, while the sum is 61.

The spelling of 27902778775 in words is "twenty-seven billion, nine hundred two million, seven hundred seventy-eight thousand, seven hundred seventy-five".