27797724806 has 4 divisors (see below), whose sum is σ = 41696587212. Its totient is φ = 13898862402.

The previous prime is 27797724797. The next prime is 27797724809. The reversal of 27797724806 is 60842779772.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27797724809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949431200 + ... + 6949431203.

It is an arithmetic number, because the mean of its divisors is an integer number (10424146803).

Almost surely, 2^27797724806 is an apocalyptic number.

27797724806 is a deficient number, since it is larger than the sum of its proper divisors (13898862406).

27797724806 is a wasteful number, since it uses less digits than its factorization.

27797724806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13898862405.

The product of its (nonzero) digits is 16595712, while the sum is 59.

The spelling of 27797724806 in words is "twenty-seven billion, seven hundred ninety-seven million, seven hundred twenty-four thousand, eight hundred six".