27550090398 has 16 divisors (see below), whose sum is σ = 55210608000. Its totient is φ = 9164958936.

The previous prime is 27550090397. The next prime is 27550090429. The reversal of 27550090398 is 89309005572.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27550090397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4597890 + ... + 4603877.

It is an arithmetic number, because the mean of its divisors is an integer number (3450663000).

Almost surely, 2^27550090398 is an apocalyptic number.

27550090398 is an abundant number, since it is smaller than the sum of its proper divisors (27660517602).

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

27550090398 is a wasteful number, since it uses less digits than its factorization.

27550090398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9202271.

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 27550090398 in words is "twenty-seven billion, five hundred fifty million, ninety thousand, three hundred ninety-eight".