27802138743 has 24 divisors (see below), whose sum is σ = 42071702400. Its totient is φ = 17658234000.

The previous prime is 27802138729. The next prime is 27802138751. The reversal of 27802138743 is 34783120872.

It is not a de Polignac number, because 27802138743 - 2⁵ = 27802138711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27802138723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215593 + ... + 319506.

It is an arithmetic number, because the mean of its divisors is an integer number (1752987600).

Almost surely, 2^27802138743 is an apocalyptic number.

27802138743 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

27802138743 is a deficient number, since it is larger than the sum of its proper divisors (14269563657).

27802138743 is a wasteful number, since it uses less digits than its factorization.

27802138743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535379 (or 535376 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 27802138743 in words is "twenty-seven billion, eight hundred two million, one hundred thirty-eight thousand, seven hundred forty-three".