27642101844 has 24 divisors (see below), whose sum is σ = 73712271808. Its totient is φ = 7897743360.

The previous prime is 27642101833. The next prime is 27642101849. The reversal of 27642101844 is 44810124672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27642101849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164536237 + ... + 164536404.

Almost surely, 2^27642101844 is an apocalyptic number.

It is an amenable number.

27642101844 is an abundant number, since it is smaller than the sum of its proper divisors (46070169964).

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

27642101844 is a wasteful number, since it uses less digits than its factorization.

27642101844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329072655 (or 329072653 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 27642101844 in words is "twenty-seven billion, six hundred forty-two million, one hundred one thousand, eight hundred forty-four".