27806430837 has 16 divisors (see below), whose sum is σ = 37564531200. Its totient is φ = 18293482992.

The previous prime is 27806430833. The next prime is 27806430893. The reversal of 27806430837 is 73803460872.

It is not a de Polignac number, because 27806430837 - 2² = 27806430833 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27806430833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157914 + ... + 283812.

It is an arithmetic number, because the mean of its divisors is an integer number (2347783200).

Almost surely, 2^27806430837 is an apocalyptic number.

It is an amenable number.

27806430837 is a deficient number, since it is larger than the sum of its proper divisors (9758100363).

27806430837 is a wasteful number, since it uses less digits than its factorization.

27806430837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126872.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 27806430837 in words is "twenty-seven billion, eight hundred six million, four hundred thirty thousand, eight hundred thirty-seven".