27418561420 has 96 divisors (see below), whose sum is σ = 62560108800. Its totient is φ = 10061086464.

The previous prime is 27418561411. The next prime is 27418561421. The reversal of 27418561420 is 2416581472.

It is not an unprimeable number, because it can be changed into a prime (27418561421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1493014 + ... + 1511266.

It is an arithmetic number, because the mean of its divisors is an integer number (651667800).

Almost surely, 2^27418561420 is an apocalyptic number.

27418561420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27418561420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31280054400).

27418561420 is an abundant number, since it is smaller than the sum of its proper divisors (35141547380).

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

27418561420 is a wasteful number, since it uses less digits than its factorization.

27418561420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18407 (or 18405 counting only the distinct ones).

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

The spelling of 27418561420 in words is "twenty-seven billion, four hundred eighteen million, five hundred sixty-one thousand, four hundred twenty".