27402594987 has 18 divisors (see below), whose sum is σ = 37765668756. Its totient is φ = 17673359160.

The previous prime is 27402594983. The next prime is 27402595013. The reversal of 27402594987 is 78949520472.

It is not a de Polignac number, because 27402594987 - 2² = 27402594983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27402594983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8886748 + ... + 8889830.

Almost surely, 2^27402594987 is an apocalyptic number.

27402594987 is a deficient number, since it is larger than the sum of its proper divisors (10363073769).

27402594987 is an frugal number, since it uses more digits than its factorization.

27402594987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6231 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 27402594987 in words is "twenty-seven billion, four hundred two million, five hundred ninety-four thousand, nine hundred eighty-seven".