27777675380 has 96 divisors (see below), whose sum is σ = 72075177216. Its totient is φ = 8756822016.

The previous prime is 27777675361. The next prime is 27777675383. The reversal of 27777675380 is 8357677772.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27777675383) 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, 438047 + ... + 497433.

It is an arithmetic number, because the mean of its divisors is an integer number (750783096).

Almost surely, 2^27777675380 is an apocalyptic number.

27777675380 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 27777675380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36037588608).

27777675380 is an abundant number, since it is smaller than the sum of its proper divisors (44297501836).

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

27777675380 is a wasteful number, since it uses less digits than its factorization.

27777675380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59673 (or 59671 counting only the distinct ones).

The product of its (nonzero) digits is 24202080, while the sum is 59.

The spelling of 27777675380 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-five thousand, three hundred eighty".