27438780338 has 4 divisors (see below), whose sum is σ = 41158170510. Its totient is φ = 13719390168.

The previous prime is 27438780329. The next prime is 27438780349. The reversal of 27438780338 is 83308783472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19840694449 + 7598085889 = 140857^2 + 87167^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27438780338.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6859695083 + ... + 6859695086.

Almost surely, 2^27438780338 is an apocalyptic number.

27438780338 is a deficient number, since it is larger than the sum of its proper divisors (13719390172).

27438780338 is a wasteful number, since it uses less digits than its factorization.

27438780338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719390171.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 27438780338 in words is "twenty-seven billion, four hundred thirty-eight million, seven hundred eighty thousand, three hundred thirty-eight".