27740541990 has 96 divisors (see below), whose sum is σ = 77723833824. Its totient is φ = 6318036480.

The previous prime is 27740541973. The next prime is 27740542001. The reversal of 27740541990 is 9914504772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379492 + ... + 446648.

It is an arithmetic number, because the mean of its divisors is an integer number (809623269).

Almost surely, 2^27740541990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27740541990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38861916912).

27740541990 is an abundant number, since it is smaller than the sum of its proper divisors (49983291834).

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

27740541990 is a wasteful number, since it uses less digits than its factorization.

27740541990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67462 (or 67455 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 27740541990 in words is "twenty-seven billion, seven hundred forty million, five hundred forty-one thousand, nine hundred ninety".