27738482145 has 32 divisors (see below), whose sum is σ = 49597156224. Its totient is φ = 13120934400.

The previous prime is 27738482141. The next prime is 27738482173. The reversal of 27738482145 is 54128483772.

It is a happy number.

It is not a de Polignac number, because 27738482145 - 2² = 27738482141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27738482141) 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, 2043382 + ... + 2056911.

It is an arithmetic number, because the mean of its divisors is an integer number (1549911132).

Almost surely, 2^27738482145 is an apocalyptic number.

It is an amenable number.

27738482145 is a deficient number, since it is larger than the sum of its proper divisors (21858674079).

27738482145 is a wasteful number, since it uses less digits than its factorization.

27738482145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100353.

The product of its digits is 3010560, while the sum is 51.

The spelling of 27738482145 in words is "twenty-seven billion, seven hundred thirty-eight million, four hundred eighty-two thousand, one hundred forty-five".