27656037420 has 48 divisors (see below), whose sum is σ = 84476625408. Its totient is φ = 6704493760.

The previous prime is 27656037403. The next prime is 27656037421. The reversal of 27656037420 is 2473065672.

It is not an unprimeable number, because it can be changed into a prime (27656037421) 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, 20950884 + ... + 20952203.

It is an arithmetic number, because the mean of its divisors is an integer number (1759929696).

Almost surely, 2^27656037420 is an apocalyptic number.

27656037420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27656037420 is an abundant number, since it is smaller than the sum of its proper divisors (56820587988).

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

27656037420 is a wasteful number, since it uses less digits than its factorization.

27656037420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903110 (or 41903108 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 27656037420 in words is "twenty-seven billion, six hundred fifty-six million, thirty-seven thousand, four hundred twenty".