27738954918 has 48 divisors (see below), whose sum is σ = 60948942912. Its totient is φ = 9116640000.

The previous prime is 27738954913. The next prime is 27738954949. The reversal of 27738954918 is 81945983772.

27738954918 is a `hidden beast` number, since 2 + 7 + 7 + 3 + 89 + 549 + 1 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27738954913) 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, 406483 + ... + 469793.

It is an arithmetic number, because the mean of its divisors is an integer number (1269769644).

Almost surely, 2^27738954918 is an apocalyptic number.

27738954918 is an abundant number, since it is smaller than the sum of its proper divisors (33209987994).

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

27738954918 is a wasteful number, since it uses less digits than its factorization.

27738954918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63661 (or 63658 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The spelling of 27738954918 in words is "twenty-seven billion, seven hundred thirty-eight million, nine hundred fifty-four thousand, nine hundred eighteen".