27221481078 has 24 divisors (see below), whose sum is σ = 59842265784. Its totient is φ = 8248933440.

The previous prime is 27221481031. The next prime is 27221481101. The reversal of 27221481078 is 87018412272.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18746851 + ... + 18748302.

It is an arithmetic number, because the mean of its divisors is an integer number (2493427741).

Almost surely, 2^27221481078 is an apocalyptic number.

27221481078 is an abundant number, since it is smaller than the sum of its proper divisors (32620784706).

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

27221481078 is a wasteful number, since it uses less digits than its factorization.

27221481078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37495180 (or 37495169 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The spelling of 27221481078 in words is "twenty-seven billion, two hundred twenty-one million, four hundred eighty-one thousand, seventy-eight".