27450557920 has 48 divisors (see below), whose sum is σ = 65740353840. Its totient is φ = 10829804544.

The previous prime is 27450557909. The next prime is 27450557957. The reversal of 27450557920 is 2975505472.

It is a congruent number.

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, 1163430 + ... + 1186789.

It is an arithmetic number, because the mean of its divisors is an integer number (1369590705).

Almost surely, 2^27450557920 is an apocalyptic number.

27450557920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27450557920 is an abundant number, since it is smaller than the sum of its proper divisors (38289795920).

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

27450557920 is a wasteful number, since it uses less digits than its factorization.

27450557920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350307 (or 2350299 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 27450557920 in words is "twenty-seven billion, four hundred fifty million, five hundred fifty-seven thousand, nine hundred twenty".