27780552499 has 24 divisors (see below), whose sum is σ = 34230856608. Its totient is φ = 22402195200.

The previous prime is 27780552421. The next prime is 27780552509. The reversal of 27780552499 is 99425508772.

It is not a de Polignac number, because 27780552499 - 2³³ = 19190617907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27780552199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2744682 + ... + 2754784.

It is an arithmetic number, because the mean of its divisors is an integer number (1426285692).

Almost surely, 2^27780552499 is an apocalyptic number.

27780552499 is a deficient number, since it is larger than the sum of its proper divisors (6450304109).

27780552499 is a wasteful number, since it uses less digits than its factorization.

27780552499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13435 (or 13428 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 27780552499 in words is "twenty-seven billion, seven hundred eighty million, five hundred fifty-two thousand, four hundred ninety-nine".