27434777020 has 96 divisors (see below), whose sum is σ = 69062418432. Its totient is φ = 8957184768.

The previous prime is 27434777003. The next prime is 27434777047. The reversal of 27434777020 is 2077743472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187117 + ... + 299803.

It is an arithmetic number, because the mean of its divisors is an integer number (719400192).

Almost surely, 2^27434777020 is an apocalyptic number.

27434777020 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 27434777020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34531209216).

27434777020 is an abundant number, since it is smaller than the sum of its proper divisors (41627641412).

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

27434777020 is a wasteful number, since it uses less digits than its factorization.

27434777020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112787 (or 112785 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 43.

The spelling of 27434777020 in words is "twenty-seven billion, four hundred thirty-four million, seven hundred seventy-seven thousand, twenty".