27897682042 has 8 divisors (see below), whose sum is σ = 41851004436. Its totient is φ = 13947347232.

The previous prime is 27897682039. The next prime is 27897682051. The reversal of 27897682042 is 24028679872.

It can be written as a sum of positive squares in 2 ways, for example, as 24793966521 + 3103715521 = 157461^2 + 55711^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723403 + ... + 760990.

Almost surely, 2^27897682042 is an apocalyptic number.

27897682042 is a deficient number, since it is larger than the sum of its proper divisors (13953322394).

27897682042 is a wasteful number, since it uses less digits than its factorization.

27897682042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493792.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 27897682042 in words is "twenty-seven billion, eight hundred ninety-seven million, six hundred eighty-two thousand, forty-two".