27738140782 has 8 divisors (see below), whose sum is σ = 45389684952. Its totient is φ = 12608245800.

The previous prime is 27738140753. The next prime is 27738140789. The reversal of 27738140782 is 28704183772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27738140789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630412269 + ... + 630412312.

It is an arithmetic number, because the mean of its divisors is an integer number (5673710619).

Almost surely, 2^27738140782 is an apocalyptic number.

27738140782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27738140782 is a deficient number, since it is larger than the sum of its proper divisors (17651544170).

27738140782 is a wasteful number, since it uses less digits than its factorization.

27738140782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260824594.

The product of its (nonzero) digits is 1053696, while the sum is 49.

Subtracting 27738140782 from its reverse (28704183772), we obtain a triangular number (966042990 = T₄₃₉₅₅).

The spelling of 27738140782 in words is "twenty-seven billion, seven hundred thirty-eight million, one hundred forty thousand, seven hundred eighty-two".