27755252780 has 24 divisors (see below), whose sum is σ = 58335854640. Its totient is φ = 11092610880.

The previous prime is 27755252773. The next prime is 27755252813. The reversal of 27755252780 is 8725255772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569135 + ... + 615974.

It is an arithmetic number, because the mean of its divisors is an integer number (2430660610).

Almost surely, 2^27755252780 is an apocalyptic number.

27755252780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27755252780 is an abundant number, since it is smaller than the sum of its proper divisors (30580601860).

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

27755252780 is a wasteful number, since it uses less digits than its factorization.

27755252780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186289 (or 1186287 counting only the distinct ones).

The product of its (nonzero) digits is 2744000, while the sum is 50.

The spelling of 27755252780 in words is "twenty-seven billion, seven hundred fifty-five million, two hundred fifty-two thousand, seven hundred eighty".