27220520516 has 48 divisors (see below), whose sum is σ = 57339104256. Its totient is φ = 11054407584.

The previous prime is 27220520471. The next prime is 27220520519. The reversal of 27220520516 is 61502502272.

It is not an unprimeable number, because it can be changed into a prime (27220520519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128606 + ... + 266421.

It is an arithmetic number, because the mean of its divisors is an integer number (1194564672).

Almost surely, 2^27220520516 is an apocalyptic number.

It is an amenable number.

27220520516 is an abundant number, since it is smaller than the sum of its proper divisors (30118583740).

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

27220520516 is a wasteful number, since it uses less digits than its factorization.

27220520516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395168 (or 395166 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 27220520516 in words is "twenty-seven billion, two hundred twenty million, five hundred twenty thousand, five hundred sixteen".