27888934749 has 32 divisors (see below), whose sum is σ = 42167354880. Its totient is φ = 16253721792.

The previous prime is 27888934709. The next prime is 27888934753. The reversal of 27888934749 is 94743988872.

It is not a de Polignac number, because 27888934749 - 2⁷ = 27888934621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27888934709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3691594 + ... + 3699140.

It is an arithmetic number, because the mean of its divisors is an integer number (1317729840).

Almost surely, 2^27888934749 is an apocalyptic number.

It is an amenable number.

27888934749 is a deficient number, since it is larger than the sum of its proper divisors (14278420131).

27888934749 is a wasteful number, since it uses less digits than its factorization.

27888934749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12569.

The product of its digits is 195084288, while the sum is 69.

The spelling of 27888934749 in words is "twenty-seven billion, eight hundred eighty-eight million, nine hundred thirty-four thousand, seven hundred forty-nine".