27971224516 has 27 divisors (see below), whose sum is σ = 52008982669. Its totient is φ = 13160253248.

The previous prime is 27971224513. The next prime is 27971224537. The reversal of 27971224516 is 61542217972.

The square root of 27971224516 is 167246.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21776904900 + 6194319616 = 147570^2 + 78704^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27971224513) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5683905 + ... + 5688823.

Almost surely, 2^27971224516 is an apocalyptic number.

27971224516 is the 167246-th square number.

It is an amenable number.

27971224516 is a deficient number, since it is larger than the sum of its proper divisors (24037758153).

27971224516 is an frugal number, since it uses more digits than its factorization.

27971224516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9876 (or 4938 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The spelling of 27971224516 in words is "twenty-seven billion, nine hundred seventy-one million, two hundred twenty-four thousand, five hundred sixteen".