27892825821 has 32 divisors (see below), whose sum is σ = 47278080000. Its totient is φ = 15921163440.

The previous prime is 27892825819. The next prime is 27892825847. The reversal of 27892825821 is 12852829872.

It is not a de Polignac number, because 27892825821 - 2¹ = 27892825819 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27892825801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91180 + ... + 253178.

It is an arithmetic number, because the mean of its divisors is an integer number (1477440000).

Almost surely, 2^27892825821 is an apocalyptic number.

27892825821 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27892825821 is a deficient number, since it is larger than the sum of its proper divisors (19385254179).

27892825821 is a wasteful number, since it uses less digits than its factorization.

27892825821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162926 (or 162920 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 27892825821 in words is "twenty-seven billion, eight hundred ninety-two million, eight hundred twenty-five thousand, eight hundred twenty-one".