27780250550 has 48 divisors (see below), whose sum is σ = 58574740560. Its totient is φ = 9717459840.

The previous prime is 27780250529. The next prime is 27780250621. The reversal of 27780250550 is 5505208772.

It is a junction number, because it is equal to n+sod(n) for n = 27780250498 and 27780250507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1112357 + ... + 1137056.

It is an arithmetic number, because the mean of its divisors is an integer number (1220307095).

Almost surely, 2^27780250550 is an apocalyptic number.

27780250550 is an abundant number, since it is smaller than the sum of its proper divisors (30794490010).

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

27780250550 is a wasteful number, since it uses less digits than its factorization.

27780250550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249457 (or 2249452 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 27780250550 in words is "twenty-seven billion, seven hundred eighty million, two hundred fifty thousand, five hundred fifty".