27968747642 has 16 divisors (see below), whose sum is σ = 45797832000. Its totient is φ = 12704514240.

The previous prime is 27968747623. The next prime is 27968747683. The reversal of 27968747642 is 24674786972.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394142 + ... + 459657.

It is an arithmetic number, because the mean of its divisors is an integer number (2862364500).

Almost surely, 2^27968747642 is an apocalyptic number.

27968747642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27968747642 is a deficient number, since it is larger than the sum of its proper divisors (17829084358).

27968747642 is a wasteful number, since it uses less digits than its factorization.

27968747642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855301.

The product of its digits is 56899584, while the sum is 62.

The spelling of 27968747642 in words is "twenty-seven billion, nine hundred sixty-eight million, seven hundred forty-seven thousand, six hundred forty-two".