27750825780 has 24 divisors (see below), whose sum is σ = 77702312352. Its totient is φ = 7400220192.

The previous prime is 27750825727. The next prime is 27750825787. The reversal of 27750825780 is 8752805772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27750825787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231256822 + ... + 231256941.

It is an arithmetic number, because the mean of its divisors is an integer number (3237596348).

Almost surely, 2^27750825780 is an apocalyptic number.

27750825780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27750825780 is an abundant number, since it is smaller than the sum of its proper divisors (49951486572).

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

27750825780 is a wasteful number, since it uses less digits than its factorization.

27750825780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462513775 (or 462513773 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 51.

The spelling of 27750825780 in words is "twenty-seven billion, seven hundred fifty million, eight hundred twenty-five thousand, seven hundred eighty".