27845407836 has 36 divisors (see below), whose sum is σ = 70394184952. Its totient is φ = 9280855584.

The previous prime is 27845407831. The next prime is 27845407841. The reversal of 27845407836 is 63870454872.

27845407836 is a `hidden beast` number, since 27 + 8 + 4 + 540 + 78 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (27845407831) and next prime (27845407841).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27845407831) 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, 379086 + ... + 446538.

Almost surely, 2^27845407836 is an apocalyptic number.

It is an amenable number.

27845407836 is an abundant number, since it is smaller than the sum of its proper divisors (42548777116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27845407836 is a wasteful number, since it uses less digits than its factorization.

27845407836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78930 (or 78925 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 27845407836 in words is "twenty-seven billion, eight hundred forty-five million, four hundred seven thousand, eight hundred thirty-six".