27805806040 has 32 divisors (see below), whose sum is σ = 63116729280. Its totient is φ = 11023892992.

The previous prime is 27805806037. The next prime is 27805806053. The reversal of 27805806040 is 4060850872.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 27805805984 and 27805806002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071344 + ... + 3080383.

It is an arithmetic number, because the mean of its divisors is an integer number (1972397790).

Almost surely, 2^27805806040 is an apocalyptic number.

27805806040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27805806040 is an abundant number, since it is smaller than the sum of its proper divisors (35310923240).

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

27805806040 is a wasteful number, since it uses less digits than its factorization.

27805806040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151851 (or 6151847 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 27805806040 in words is "twenty-seven billion, eight hundred five million, eight hundred six thousand, forty".