27392421888 has 624 divisors, whose sum is σ = 92665765920. Its totient is φ = 8026324992.

The previous prime is 27392421853. The next prime is 27392421911. The reversal of 27392421888 is 88812429372.

It is a tau number, because it is divible by the number of its divisors (624).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 375238620 + ... + 375238692.

It is an arithmetic number, because the mean of its divisors is an integer number (148502830).

Almost surely, 2^27392421888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27392421888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46332882960).

27392421888 is an abundant number, since it is smaller than the sum of its proper divisors (65273344032).

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

27392421888 is an equidigital number, since it uses as much as digits as its factorization.

27392421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 120 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 27392421888 in words is "twenty-seven billion, three hundred ninety-two million, four hundred twenty-one thousand, eight hundred eighty-eight".