27405062420 has 24 divisors (see below), whose sum is σ = 57721418664. Its totient is φ = 10929494016.

The previous prime is 27405062359. The next prime is 27405062423. The reversal of 27405062420 is 2426050472.

It can be written as a sum of positive squares in 4 ways, for example, as 4948841104 + 22456221316 = 70348^2 + 149854^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27405062423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026277 + ... + 2039756.

It is an arithmetic number, because the mean of its divisors is an integer number (2405059111).

Almost surely, 2^27405062420 is an apocalyptic number.

27405062420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27405062420 is an abundant number, since it is smaller than the sum of its proper divisors (30316356244).

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

27405062420 is a wasteful number, since it uses less digits than its factorization.

27405062420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066379 (or 4066377 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The spelling of 27405062420 in words is "twenty-seven billion, four hundred five million, sixty-two thousand, four hundred twenty".