27449864380 has 12 divisors (see below), whose sum is σ = 57644715240. Its totient is φ = 10979945744.

The previous prime is 27449864369. The next prime is 27449864437. The reversal of 27449864380 is 8346894472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686246590 + ... + 686246629.

It is an arithmetic number, because the mean of its divisors is an integer number (4803726270).

Almost surely, 2^27449864380 is an apocalyptic number.

27449864380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27449864380 is an abundant number, since it is smaller than the sum of its proper divisors (30194850860).

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

27449864380 is a wasteful number, since it uses less digits than its factorization.

27449864380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372493228 (or 1372493226 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 27449864380 in words is "twenty-seven billion, four hundred forty-nine million, eight hundred sixty-four thousand, three hundred eighty".