27806212474 has 32 divisors (see below), whose sum is σ = 42862659840. Its totient is φ = 13522644288.

The previous prime is 27806212471. The next prime is 27806212487. The reversal of 27806212474 is 47421260872.

It is a self number, because there is not a number n which added to its sum of digits gives 27806212474.

It is not an unprimeable number, because it can be changed into a prime (27806212471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11224524 + ... + 11227000.

It is an arithmetic number, because the mean of its divisors is an integer number (1339458120).

Almost surely, 2^27806212474 is an apocalyptic number.

27806212474 is a deficient number, since it is larger than the sum of its proper divisors (15056447366).

27806212474 is a wasteful number, since it uses less digits than its factorization.

27806212474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222.

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 27806212474 in words is "twenty-seven billion, eight hundred six million, two hundred twelve thousand, four hundred seventy-four".