27506049780 has 96 divisors (see below), whose sum is σ = 84103463808. Its totient is φ = 6661388800.

The previous prime is 27506049749. The next prime is 27506049803. The reversal of 27506049780 is 8794060572.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 648010 + ... + 689150.

It is an arithmetic number, because the mean of its divisors is an integer number (876077748).

Almost surely, 2^27506049780 is an apocalyptic number.

27506049780 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 27506049780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42051731904).

27506049780 is an abundant number, since it is smaller than the sum of its proper divisors (56597414028).

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

27506049780 is a wasteful number, since it uses less digits than its factorization.

27506049780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42177 (or 42175 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 27506049780 in words is "twenty-seven billion, five hundred six million, forty-nine thousand, seven hundred eighty".