27897840342 has 20 divisors (see below), whose sum is σ = 62511827796. Its totient is φ = 9299280060.

The previous prime is 27897840331. The next prime is 27897840401. The reversal of 27897840342 is 24304879872.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 86104284 + ... + 86104607.

Almost surely, 2^27897840342 is an apocalyptic number.

27897840342 is an abundant number, since it is smaller than the sum of its proper divisors (34613987454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27897840342 is a wasteful number, since it uses less digits than its factorization.

27897840342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172208905 (or 172208896 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 27897840342 in words is "twenty-seven billion, eight hundred ninety-seven million, eight hundred forty thousand, three hundred forty-two".