27806212475 has 12 divisors (see below), whose sum is σ = 34622780280. Its totient is φ = 22152662400.

The previous prime is 27806212471. The next prime is 27806212487. The reversal of 27806212475 is 57421260872.

It is not a de Polignac number, because 27806212475 - 2² = 27806212471 is a prime.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2301545 + ... + 2313594.

It is an arithmetic number, because the mean of its divisors is an integer number (2885231690).

Almost surely, 2^27806212475 is an apocalyptic number.

27806212475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27806212475 is a deficient number, since it is larger than the sum of its proper divisors (6816567805).

27806212475 is a wasteful number, since it uses less digits than its factorization.

27806212475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615390 (or 4615385 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 27806212475 in words is "twenty-seven billion, eight hundred six million, two hundred twelve thousand, four hundred seventy-five".